APA

Stryker P., . (1967). The incomparable salesmen: a study of the extraordinary life insurance agents in the Million Dollar Round Table, including the greatest salesmen in the business world. New York: McGraw-Hill.

Chicago

Stryker Perrin, . 1967. The incomparable salesmen: a study of the extraordinary life insurance agents in the Million Dollar Round Table, including the greatest salesmen in the business world. New York: McGraw-Hill.

Harvard

Stryker P., . (1967). The incomparable salesmen: a study of the extraordinary life insurance agents in the Million Dollar Round Table, including the greatest salesmen in the business world. New York: McGraw-Hill.

MLA

Stryker Perrin, . The incomparable salesmen: a study of the extraordinary life insurance agents in the Million Dollar Round Table, including the greatest salesmen in the business world. New York: McGraw-Hill. 1967.