Style de citation APA (7e éd.)

Perrin, P. G. (1968). Writer's guide and index to english. (4a. ed.). Scott, Foresman and company.

Style de citation Chicago (17e éd.)

Perrin, Poter G. Writer's Guide and Index to English. 4a. ed. Estados Unidos: Scott, Foresman and company, 1968.

Style de citation MLA (9e éd.)

Perrin, Poter G. Writer's Guide and Index to English. 4a. ed. Scott, Foresman and company, 1968.