Cita APA (7th ed.)

Harikumar, P. &. D. (2017). Blackwater tourism. Serials Publication.

Cita Chicago (17th ed.)

Harikumar, P.N. & D.Susha. Blackwater Tourism. New Delhi: Serials Publication, 2017.

Cita MLA (9th ed.)

Harikumar, P.N. & D.Susha. Blackwater Tourism. Serials Publication, 2017.