APA (7th ed.) Citation

Johnson, R. K. (1990). The Second language curriculum. University Press.

Chicago Style (17th ed.) Citation

Johnson, Robert Keith. The Second Language Curriculum. Cambridge [etc.]: University Press, 1990.

MLA (9th ed.) Citation

Johnson, Robert Keith. The Second Language Curriculum. University Press, 1990.

Warning: These citations may not always be 100% accurate.