Gaya APA
Riveros, F., Skerman, P. (1977).
Tropical Forage Legumes .
Roma:
Food & Agriiculture Organzation of the United Nations Rome.
Gaya MLA
Riveros, Fernando., Skerman, P.J..
"Tropical Forage Legumes".
Roma:
Food & Agriiculture Organzation of the United Nations Rome,
1977.
Text.