Dyfyniad APA

Cerina, F., Markandya, A., & McAleer, M. (2011). Economics of sustainable tourism. Routledge.

Dyfyniad Arddull Chicago

Cerina, Fabio, Anil Markandya, and Michael McAleer. Economics of Sustainable Tourism. Abingdon, Oxon: Routledge, 2011.

Dyfyniad MLA

Cerina, Fabio, et al. Economics of Sustainable Tourism. Routledge, 2011.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.