APA (7th ed.) Citation

Usman, M., Barusman, Y. S., Elfaki, F. A. M., & Daoud, J. I. (2013). Profile analysis of population based on age-group in Sumatra. IDOSI Publications.

Chicago Style (17th ed.) Citation

Usman, Mustofa, Yusuf S. Barusman, Faiz Ahmed Mohamed Elfaki, and Jamal Ibrahim Daoud. Profile Analysis of Population Based on Age-group in Sumatra. IDOSI Publications, 2013.

MLA (8th ed.) Citation

Usman, Mustofa, et al. Profile Analysis of Population Based on Age-group in Sumatra. IDOSI Publications, 2013.