APA-Zitierstil (7. Ausg.)

Haffert, J. M. (1992). To prevent this. Two Hearts Media Organization.

Chicago-Zitierstil (17. Ausg.)

Haffert, John M. To Prevent This. Makati: Two Hearts Media Organization, 1992.

MLA-Zitierstil (9. Ausg.)

Haffert, John M. To Prevent This. Two Hearts Media Organization, 1992.