1 이인석, "한글과 숫자 낱글자의 가독성에 미치는 주요 요인 평가" 대한인간공학회 28 (28): 1-7, 2009
2 정규수, "자전거 도로의 안내표지 설치 위치에 관한 연구" 대한교통학회 28 (28): 99-108, 2010
3 "http://www.americansinfrance.net/driving/ Selected Road Signs.cfm"
4 Wang J., "Using SAS PROC MIXED to Demystify the Hierarchical Linear Model" 66 (66): 84-93, 1997
5 Chong K. S., "The Construction of U-Transportation for Green Growth" 5 (5): 2008
6 RWBA, "Symbole der Richtlinien für die Wegweisende Beschilderung außerhalb von Autobahnen"
7 Government of Canada, "Roundabout Rules of the Road"
8 Ministry of Land, "Road Sign Regulation"
9 Overall John E., "Prblematic Formulations of SAS PROC.MIXED Models for Repeated Measurements" 9 (9): 189-216, 1999
10 Inman Vaughan W., "Navigation Signing for Roundabouts"
1 이인석, "한글과 숫자 낱글자의 가독성에 미치는 주요 요인 평가" 대한인간공학회 28 (28): 1-7, 2009
2 정규수, "자전거 도로의 안내표지 설치 위치에 관한 연구" 대한교통학회 28 (28): 99-108, 2010
3 "http://www.americansinfrance.net/driving/ Selected Road Signs.cfm"
4 Wang J., "Using SAS PROC MIXED to Demystify the Hierarchical Linear Model" 66 (66): 84-93, 1997
5 Chong K. S., "The Construction of U-Transportation for Green Growth" 5 (5): 2008
6 RWBA, "Symbole der Richtlinien für die Wegweisende Beschilderung außerhalb von Autobahnen"
7 Government of Canada, "Roundabout Rules of the Road"
8 Ministry of Land, "Road Sign Regulation"
9 Overall John E., "Prblematic Formulations of SAS PROC.MIXED Models for Repeated Measurements" 9 (9): 189-216, 1999
10 Inman Vaughan W., "Navigation Signing for Roundabouts"
11 Federal Highway Administration, "Manual on Uniform Traffic Control Devices(MUTCD)"
12 Weber P., "Internationally Recognized Roundabout Signs" 2005
13 Ministry of Land, "Design Guideline for Roundabout"