Woods, H. (1929). Nature's Protest Against Counter-Conceptives. Santa Clara, Cal..
Chicago-viite (17. p.)Woods, Henry. Nature's Protest Against Counter-Conceptives. Santa Clara, Cal., 1929.
MLA-viite (8. p.)Woods, Henry. Nature's Protest Against Counter-Conceptives. Santa Clara, Cal., 1929.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.