Παραπομπή σε μορφή APA (7η εκδ.)

Wahab, S., & Pigram, J. J. J. (1997). Tourism, development and growth: The challenge of sustainability. Routledge.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Wahab, Salah, και J. J. J. Pigram. Tourism, Development and Growth: The Challenge of Sustainability. London: Routledge, 1997.

Παραπομπή σε μορφή MLA (9th εκδ.)

Wahab, Salah, και J. J. J. Pigram. Tourism, Development and Growth: The Challenge of Sustainability. Routledge, 1997.