Dyfyniad APA

British Travel Educational Trust. (1978). A comparative study of the provision of tourist information services in Western Europe annd North America. British Travel Educational Trust.

Dyfyniad Arddull Chicago

British Travel Educational Trust. A Comparative Study of the Provision of Tourist Information Services in Western Europe Annd North America. London: British Travel Educational Trust, 1978.

Dyfyniad MLA

British Travel Educational Trust. A Comparative Study of the Provision of Tourist Information Services in Western Europe Annd North America. British Travel Educational Trust, 1978.

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