Dyfyniad APA

MILL, R. C. (1990). Tourism The International Business Robert Christie Mill. Prentice-Hall.

Dyfyniad Arddull Chicago

MILL, Robert Christie. Tourism The International Business Robert Christie Mill. Prentice-Hall, 1990.

Dyfyniad MLA

MILL, Robert Christie. Tourism The International Business Robert Christie Mill. Prentice-Hall, 1990.

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