APA
(1994). Hormonal contraception : pills, injections & implants. Vancouver, B.C., Canada: EMIS-Canada.
Chicago
1994. Hormonal contraception : pills, injections & implants. Vancouver, B.C., Canada: EMIS-Canada.
Harvard
(1994). Hormonal contraception : pills, injections & implants. Vancouver, B.C., Canada: EMIS-Canada.
MLA
Hormonal contraception : pills, injections & implants. Vancouver, B.C., Canada: EMIS-Canada. 1994.