Παραπομπή APA

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

Παραπομπή Chicago Style

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

Παραπομπή MLA

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