APA-viite (7. p.)

Heermans, F. (1888). Two negatives make an affirmative: A photographic comedy in one act. Dramatic Pub. Co..

Chicago-viite (17. p.)

Heermans, Forbes. Two Negatives Make an Affirmative: A Photographic Comedy in One Act. Chicago: Dramatic Pub. Co., 1888.

MLA-viite (8. p.)

Heermans, Forbes. Two Negatives Make an Affirmative: A Photographic Comedy in One Act. Dramatic Pub. Co., 1888.