Cita APA

Sigala, M., Christou, E., & Gretzel, U. (2015). Social media in travel, tourism and hospitality: Theory, practice and cases. Ashgate Pub.

Chicago Style Citation

Sigala, Marianna, Evangelos Christou, i Ulrike Gretzel. Social Media in Travel, Tourism and Hospitality: Theory, Practice and Cases. Ashgate Pub, 2015.

Cita MLA

Sigala, Marianna, Evangelos Christou, i Ulrike Gretzel. Social Media in Travel, Tourism and Hospitality: Theory, Practice and Cases. Ashgate Pub, 2015.