APA

Chong G., Phang W. & Wrong G. (1989). Manual for condition rating of flexible pavements distress manifestations. Downsview, Ontario: Ontario Ministry of Transportation. SP 24.

Chicago

Chong GJ, Phang WA and Wrong GA. 1989. Manual for condition rating of flexible pavements distress manifestations. Downsview, Ontario: Ontario Ministry of Transportation. SP 24.

Harvard

Chong G., Phang W. and Wrong G. (1989). Manual for condition rating of flexible pavements distress manifestations. Downsview, Ontario: Ontario Ministry of Transportation. SP 24.

MLA

Chong GJ, Phang WA and Wrong GA. Manual for condition rating of flexible pavements distress manifestations. Downsview, Ontario: Ontario Ministry of Transportation. SP 24. 1989.