APA

Alkema L., Kantorova V., Menozzi C. & Biddlecom A. (20130607). National, regional, and global rates and trends in contraceptive prevalence and unmet need for family planning between 1990 and 2015: a systematic and comprehensive analysis. : Lancet (London, England).

Chicago

Alkema Leontine, Kantorova Vladimira, Menozzi Clare and Biddlecom Ann. 20130607. National, regional, and global rates and trends in contraceptive prevalence and unmet need for family planning between 1990 and 2015: a systematic and comprehensive analysis. : Lancet (London, England).

Harvard

Alkema L., Kantorova V., Menozzi C. and Biddlecom A. (20130607). National, regional, and global rates and trends in contraceptive prevalence and unmet need for family planning between 1990 and 2015: a systematic and comprehensive analysis. : Lancet (London, England).

MLA

Alkema Leontine, Kantorova Vladimira, Menozzi Clare and Biddlecom Ann. National, regional, and global rates and trends in contraceptive prevalence and unmet need for family planning between 1990 and 2015: a systematic and comprehensive analysis. : Lancet (London, England). 20130607.