APA-referens

Hawk, M. C. (1962). Schaum's ouline of theory and problems of descriptive geometry. McGraw-Hill.

Chicago-stil citat

Hawk, Monor Clyde. Schaum's Ouline of Theory and Problems of Descriptive Geometry. New York: McGraw-Hill, 1962.

MLA-referens

Hawk, Monor Clyde. Schaum's Ouline of Theory and Problems of Descriptive Geometry. McGraw-Hill, 1962.