एपीए उद्धरण

Álvarez, P., & Cárdenas, H. (2006). Situation of corn and bean production at Pejibaye of Perez Zeledon, and Pilas of Buenos Aires, Costa Rica.

शिकागो स्टाइल उद्धरण

Álvarez, Pablo, और Hernando Cárdenas. Situation of Corn and Bean Production At Pejibaye of Perez Zeledon, and Pilas of Buenos Aires, Costa Rica. 2006.

एमएलए उद्धरण

Álvarez, Pablo, और Hernando Cárdenas. Situation of Corn and Bean Production At Pejibaye of Perez Zeledon, and Pilas of Buenos Aires, Costa Rica. 2006.