APA استشهاد

Hall, C. M., & Boyd, S. (2006). Nature- based tourism in peripheral area: Development or disaster? Viva books.

استشهاد بنمط شيكاغو

Hall, C. Michael, و Stephen Boyd. Nature- Based Tourism in Peripheral Area: Development or Disaster? New Delhi: Viva books, 2006.

MLA استشهاد

Hall, C. Michael, و Stephen Boyd. Nature- Based Tourism in Peripheral Area: Development or Disaster? Viva books, 2006.