Penggayaan APA

WILLIAMS, Trefor. (1990). Food, environment and health : . Geneva: World Health Organization.

Chicago Style

WILLIAMS, Trefor. Food, environment and health :. Geneva: World Health Organization, 1990. Buku.

MLA Style

WILLIAMS, Trefor. Food, environment and health :. Geneva: World Health Organization, 1990. Buku.

Turabian Style

WILLIAMS, Trefor. Food, environment and health :. Geneva: World Health Organization, 1990. Buku.