Cita APA (7th ed.)

Manhas & Parikshat singh. (2012). Sustainable and responsible tourism: Trends prachies &cases. PHI learning pvt .ltd.

Cita Chicago (17th ed.)

Manhas i Parikshat singh. Sustainable and Responsible Tourism: Trends Prachies &cases. New Delhi: PHI learning pvt .ltd, 2012.

Cita MLA (9th ed.)

Manhas i Parikshat singh. Sustainable and Responsible Tourism: Trends Prachies &cases. PHI learning pvt .ltd, 2012.