APA引文

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

Chicago Style (17th ed.) Citation

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

MLA引文

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