Tohutoro APA (7th ed.)

Sheldon, L. W. (1920). Twentieth century letter writer (1a. ed.). David Mc Kay, Publisher.

Tohutoru Kātū Chicago (17th ed.)

Sheldon, L. W. Twentieth Century Letter Writer. 1a. ed. Filadelfia: David Mc Kay, Publisher, 1920.

Tohutoro MLA (9th ed.)

Sheldon, L. W. Twentieth Century Letter Writer. 1a. ed. David Mc Kay, Publisher, 1920.