APA

Allen R., . (1990). The Concise oxford dictionary of current English. New York: Oxford Univesity Press.

Chicago

Allen R.E, . 1990. The Concise oxford dictionary of current English. New York: Oxford Univesity Press.

Harvard

Allen R., . (1990). The Concise oxford dictionary of current English. New York: Oxford Univesity Press.

MLA

Allen R.E, . The Concise oxford dictionary of current English. New York: Oxford Univesity Press. 1990.