Παραπομπή σε μορφή APA (7η εκδ.)

Nelson, B. M. W. (1928). State recreation: Parks, forests and game preserves. National conference on State parks, Inc..

Παραπομπή σε μορφή Chicago (17η εκδ.)

Nelson, Beatrice M. Ward. State Recreation: Parks, Forests and Game Preserves. Washington, D.C.: National conference on State parks, Inc., 1928.

Παραπομπή σε μορφή MLA (8th εκδ.)

Nelson, Beatrice M. Ward. State Recreation: Parks, Forests and Game Preserves. National conference on State parks, Inc., 1928.