Παραπομπή APA

Jayson,E.A, & Easa,P.S. (2004). KFRI Handbook No.4: A Field guide to animal signs. Kerala forest research institute.

Παραπομπή Chicago Style

Jayson,E.A, και Easa,P.S. KFRI Handbook No.4: A Field Guide to Animal Signs. Peechi: Kerala forest research institute, 2004.

Παραπομπή MLA

Jayson,E.A, και Easa,P.S. KFRI Handbook No.4: A Field Guide to Animal Signs. Kerala forest research institute, 2004.