APA-ийн эшлэл(7 дахь хэвлэлт)

Singh, L. (2008). Trends in travel and tourism and laws. Isha Books.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Singh, L.K. Trends in Travel and Tourism and Laws. Delhi: Isha Books, 2008.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Singh, L.K. Trends in Travel and Tourism and Laws. Isha Books, 2008.