Havemann, E. (1967). Birth control. Time-Life Books.
Chicago-čujuhus (17. p.)Havemann, Ernest. Birth Control. New York: Time-Life Books, 1967.
MLA-čujuhus (9. p.)Havemann, Ernest. Birth Control. Time-Life Books, 1967.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.