Cita APA (7a ed.)

Sigala, M., Christou, E., & Gretzel, U. (2016). Social media in travel, tourism and hospitality: Theory, practice and cases. Routledge.

Cita Chicago Style (17a ed.)

Sigala, Marianna, Evangelos Christou, y Ulrike Gretzel. Social Media in Travel, Tourism and Hospitality: Theory, Practice and Cases. London, [England] ; New York, New York: Routledge, 2016.

Cita MLA (9a ed.)

Sigala, Marianna, et al. Social Media in Travel, Tourism and Hospitality: Theory, Practice and Cases. Routledge, 2016.