Παραπομπή APA

K Balachandran Thampi. (1997). Natural resources of Kerala. WWF for nature.

Παραπομπή Chicago Style

K Balachandran Thampi. Natural Resources of Kerala. Trivandrum: WWF for nature, 1997.

Παραπομπή MLA

K Balachandran Thampi. Natural Resources of Kerala. WWF for nature, 1997.