APA (7e ed.) Bronvermelding

Thomson, A. H. (1969). The Feldman method: The words and working philosophy of the world's greatest insurance salesman. Farnsworth Pub. Co.

Chicago (17e ed.) Bronvermelding

Thomson, Andrew H. The Feldman Method: The Words and Working Philosophy of the World's Greatest Insurance Salesman. Lynbrook, N.Y: Farnsworth Pub. Co, 1969.

MLA (9e ed.) Bronvermelding

Thomson, Andrew H. The Feldman Method: The Words and Working Philosophy of the World's Greatest Insurance Salesman. Farnsworth Pub. Co, 1969.