Gaya APA

Marderosian, A, D., Liberti, L, E. (1988). Natural Product Medicine : a scientific guide to foods drugs cosmetics . Washington: George F. stickley company.

Gaya MLA

Marderosian, Ara, Der., Liberti, Lawrence, E.. "Natural Product Medicine : a scientific guide to foods drugs cosmetics". Washington: George F. stickley company, 1988. Text.