Cita APA (7a ed.)

Giles, H. (1977). Language, ethnicity and intergroup relations. Academic Press.

Cita Chicago Style (17a ed.)

Giles, Howard. Language, Ethnicity and Intergroup Relations. London [etc.]: Academic Press, 1977.

Cita MLA (9a ed.)

Giles, Howard. Language, Ethnicity and Intergroup Relations. Academic Press, 1977.