APA Style

al, E., Beston, G. (1992). Effectiveness of vitamin A supplementation in the control of young child morbidity and mortality in developing countries . Toronto: University of Toronto, Badan Litbangkes.

MLA Style

al, Et., Beston, G.H.. "Effectiveness of vitamin A supplementation in the control of young child morbidity and mortality in developing countries". Toronto: University of Toronto, Badan Litbangkes, 1992. print.