Cita APA (7th ed.)

Lugton, R. C. (1970). English as a second language: Current issues. Center for Curriculum Development.

Cita Chicago (17th ed.)

Lugton, Robert C. English as a Second Language: Current Issues. Philadelphia, Pa: Center for Curriculum Development, 1970.

Cita MLA (9th ed.)

Lugton, Robert C. English as a Second Language: Current Issues. Center for Curriculum Development, 1970.

Atenció: Aquestes cites poden no estar 100% correctes.