APA Citatie

Collier, R. (1931). The Robert Collier Letter Book. New York ; London: McGraw-Hill Book Company.

Chicago Style citaat

Collier, Robert. The Robert Collier Letter Book. New York ; London: McGraw-Hill Book Company, 1931.

MLA citatie

Collier, Robert. The Robert Collier Letter Book. New York ; London: McGraw-Hill Book Company, 1931.

Let op: Deze citaties zijn niet altijd 100% accuraat.