Bowman, S. Twayne's United States authors series. Twayne.
Chicago-Zitierstil (17. Ausg.)Bowman, Sylvia. Twayne's United States Authors Series. Boston: Twayne.
MLA-Zitierstil (8. Ausg.)Bowman, Sylvia. Twayne's United States Authors Series. Twayne.
Opozorilo: Ti citati niso vedno 100% točni.