Style de citation APA (7e éd.)

Flagg, W. (1889). A year with the birds. Educational Pub. Co..

Style de citation Chicago (17e éd.)

Flagg, Wilson. A Year with the Birds. Boston, N.Y.: Educational Pub. Co., 1889.

Style de citation MLA (8e éd.)

Flagg, Wilson. A Year with the Birds. Educational Pub. Co., 1889.