एपीए उद्धरण

Agriculture Department, Govt of Kerala, & Soil Survey Organisation. (2007). Bench Mark Soils Of Kerala.

शिकागो स्टाइल उद्धरण

Agriculture Department, Govt of Kerala, और Soil Survey Organisation. Bench Mark Soils Of Kerala. Tiruvanathapuram, Govt Of Kerala, 2007.

एमएलए उद्धरण

Agriculture Department, et al. Bench Mark Soils Of Kerala. 2007.