APA-Zitierstil (7. Ausg.)

Schreier, P. A. (1971). The United States: Understanding through inquiry. American Book Comp.

Chicago-Zitierstil (17. Ausg.)

Schreier, Phillip A. The United States: Understanding Through Inquiry. New York [u.a.]: American Book Comp, 1971.

MLA-Zitierstil (9. Ausg.)

Schreier, Phillip A. The United States: Understanding Through Inquiry. American Book Comp, 1971.