एपीए उद्धरण

Alvarado, A., & Forsythe, W. (2005). Variation of bulk density in soil orders of Costa Rica.

शिकागो स्टाइल उद्धरण

Alvarado, Alfredo, और Warren Forsythe. Variation of Bulk Density in Soil Orders of Costa Rica. 2005.

एमएलए उद्धरण

Alvarado, Alfredo, और Warren Forsythe. Variation of Bulk Density in Soil Orders of Costa Rica. 2005.