Wulifan, J. K., Mazalale, J., Kambala, C., Angko, W., Asante, J., Kpinpuo, S., & Kalolo, A. (2019). Prevalence and determinants of unmet need for family planning among married women in Ghana-a multinomial logistic regression analysis of the GDHS, 2014. Contracept Reprod Med.

Wulifan, Joseph K., Jacob Mazalale, Christabel Kambala, William Angko, Job Asante, Stephen Kpinpuo, i Albino Kalolo. "Prevalence and Determinants of Unmet Need for Family Planning Among Married Women in Ghana-a Multinomial Logistic Regression Analysis of the GDHS, 2014." Contracept Reprod Med 2019.

Wulifan, Joseph K., et al. "Prevalence and Determinants of Unmet Need for Family Planning Among Married Women in Ghana-a Multinomial Logistic Regression Analysis of the GDHS, 2014." Contracept Reprod Med 2019.