Gaya APA

Anonim, . (1981). Underexploited Tropical Plants with Promising Economic Value (Cet. 6.--). Washington D.C.: National Academy of Scienes.

Gaya MLA

Anonim, . "Underexploited Tropical Plants with Promising Economic Value". Cet. 6.-- Washington D.C.: National Academy of Scienes, 1981. Text.