American Society of Civil Engineers. Committee on Employment Conditions & American Society of Civil Engineers. Committee on Employment Conditions. (1988). Guide to employment conditions for civil engineers (3rd ed.). American Society of Civil Engineers.
Cita Chicago (17th ed.)American Society of Civil Engineers. Committee on Employment Conditions i American Society of Civil Engineers. Committee on Employment Conditions. Guide to Employment Conditions for Civil Engineers. 3rd ed. New York, N.Y.: American Society of Civil Engineers, 1988.
Cita MLA (8th ed.)American Society of Civil Engineers. Committee on Employment Conditions i American Society of Civil Engineers. Committee on Employment Conditions. Guide to Employment Conditions for Civil Engineers. 3rd ed. American Society of Civil Engineers, 1988.