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Lua i Stíl Chicago (17ú heag.)International Development Research Centre (Canada) agus Population Council. Choice and Challenge: Global Teamwork in Developing a Contraceptive Implant. Ottawa, Ont., Canada: International Development Research Centre in collaboration with the Population Council, 1990.
Lua MLA (9ú heag.)International Development Research Centre (Canada) agus Population Council. Choice and Challenge: Global Teamwork in Developing a Contraceptive Implant. International Development Research Centre in collaboration with the Population Council, 1990.