APA (7e ed.) Bronvermelding

Gibbs, D. (1909). Elementary English grammar and composition. American Book.

Chicago (17e ed.) Bronvermelding

Gibbs, David. Elementary English Grammar and Composition. New York: American Book, 1909.

MLA (9e ed.) Bronvermelding

Gibbs, David. Elementary English Grammar and Composition. American Book, 1909.