APA引文

Seth, P. (1993). An introduction to travel and tourism 1993. Sterling pub.pvt.ltd.

Chicago Style (17th ed.) Citation

Seth, Prannath. An Introduction to Travel and Tourism 1993. New delhi: Sterling pub.pvt.ltd, 1993.

MLA引文

Seth, Prannath. An Introduction to Travel and Tourism 1993. Sterling pub.pvt.ltd, 1993.