APA Format
Weller, Robert H.
; Bouvier, Leon F.
. (1981). Population demography and policy. New York : St. Martins Press
MLA Format
Weller, Robert H.; Bouvier, Leon F.
. Population demography and policy. New York : St. Martins Press, 1981
Australian/Harvard Format
Weller, Robert H.
; Bouvier, Leon F.
. 1981. Population demography and policy. St. Martins Press, New York
Warning: These citations may not always be 100% accurate.