APA-Zitierstil (7. Ausg.)

Leonard, W. T. (1986). Once was enough. Scarecrow Press.

Chicago-Zitierstil (17. Ausg.)

Leonard, William T. Once Was Enough. Metuchen, NJ u.a: Scarecrow Press, 1986.

MLA-Zitierstil (9. Ausg.)

Leonard, William T. Once Was Enough. Scarecrow Press, 1986.