APA

(1997). Culture, environment, and food to prevent vitamin A deficiency. Boston: International Nutrition Foundation for Developing Countries.

Chicago

1997. Culture, environment, and food to prevent vitamin A deficiency. Boston: International Nutrition Foundation for Developing Countries.

Harvard

(1997). Culture, environment, and food to prevent vitamin A deficiency. Boston: International Nutrition Foundation for Developing Countries.

MLA

Culture, environment, and food to prevent vitamin A deficiency. Boston: International Nutrition Foundation for Developing Countries. 1997.