Cita APA (7th ed.)

Mill, R. C. (1990). Tourism: The international business. Prentice-Hall.

Cita Chicago (17th ed.)

Mill, Robert Christie. Tourism: The International Business. Englewood Cliffs, N.J: Prentice-Hall, 1990.

Cita MLA (9th ed.)

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