Sigala, M., Christou, E., & Gretzel, U. (2015). Social media in travel, tourism and hospitality: Theory, practice and cases. Ashgate Pub.
Trích dẫn kiểu ChicagoSigala, Marianna, Evangelos Christou, và Ulrike Gretzel. Social Media in Travel, Tourism and Hospitality: Theory, Practice and Cases. Ashgate Pub, 2015.
MLA引文Sigala, Marianna, Evangelos Christou, và Ulrike Gretzel. Social Media in Travel, Tourism and Hospitality: Theory, Practice and Cases. Ashgate Pub, 2015.
警告：這些引文格式不一定是100％准確.