APA استشهاد

Singh, L. (2008). Fundamental of tourism and travel. ISHA books.

استشهاد بنمط شيكاغو

Singh, L.K. Fundamental of Tourism and Travel. Delhi: ISHA books, 2008.

MLA استشهاد

Singh, L.K. Fundamental of Tourism and Travel. ISHA books, 2008.