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1 Piantadosi, Steven T., "Zipf’s Word Frequency Law in Natural Language: A Critical Review and Future Directions" 21 (21): 1112-1130, 2014
2 OxfordDictionaries. com., "What Is the Commonest Word?" Oxford: Oxford University Press 2011
3 Frodesen, Jan, "The Power of Context in Language Teaching and Lear" Thomson 2005
4 Celce-Murcia, Marianne, "The Grammar Book: Form, Meaning, and Use for English Language Teachers" Cengage Learning 2015
5 Robinson, Bernadette, "The CIPP Approach to Evaluation"
6 Bruner, Jerocie S., "The Act of Discovery" 31 (31): 21-32, 1961
7 Johns, Tim, "Teaching and Learning by Doing Corpus Analysis" John Benjamins 107-117, 2002
8 Leech, Geoffrey, "Teaching and Language Corpora" Longman 1-23, 1997
9 Celce-Murcia, Marianne, "Teaching English as a Second or Foreign Language" Heinle and Heinle 2001
10 Kettemann, Bernhard, "Style: Literary and Non-Literary. Contemporary Trends in Cultural Stylistics" The Edwin Mellen Press 307-318, 1995
11 Hunston, Susan, "Starting with the Small Words: Patterns, Lexis and Semantic Sequences" 13 (13): 271-295, 2008
12 Barr, Rebecca, "Reading Diagnosis for Teachers: An Instructional Approach" Pearso 2013
13 Zipf, George Kingsley, "Psycho-Biology of Languages" Houghtton-Mifflin 1935
14 Lindstromberg, Seth, "Preposition Entries in UK Monolingual Learners’ Dictionaries:Problems and Possible Solutions" 2 (2): 79-103, 2001
15 Johns, Tim, "Perspective on Pedagogical Grammar" Cambridge University Press 293-313, 1994
16 Boulding, Kenneth, "Notes on the Information Concept" 6 : 103-112, 1955
17 Hinkel, Eli, "New Perspectives on Grammar Teaching in Second Language Classrooms" Routledge 2002
18 Gavioli, Laura, "Learning with Corpora" Clueb 1997
19 Nation, Paul, "Learning Vocabulary in Another Language" Cambridge University Press 2013
20 Barnbrook, Geoff, "Language and Computers: A Practical Introduction to the Computer Analysis of Language" Edinburgh University Press 1996
21 Lewis, Michael, "Implementing the Lexical Approach" Heinle and Heinle 2002
22 Alfieri, Louis, "Does Discovery-Based Instruction Enhance Learning?" 103 (103): 1-18, 2011
23 Friginal, Eric, "Corpus Linguistics for English Teachers: Tools, Online Resources, and Classroom Activities" Routledge 2018
24 Flowerdew, Lynne, "Corpora and Language Education" Palgrave Macmillan 2012
25 Stevens, Vance, "Concordance-based Vocabulary Exercises: A Viable Alternative to Gap-fillers" 4 : 47-63, 1991
26 Ngussa, Baraka Manjale, "Application of ADDIE Model of Instruction in Teaching-Learning Transaction among Teachers of Mara Conference Adventist Secondary Schools, Tanzania" 5 (5): 1-2, 2014
27 Tribble, Christopher, "Academic Discourse" Addison Wesley Longman 131-149, 2002
28 Greenbaum, Sidney, "A Student's Grammar of the English Language" Longman 1990