APA

Collin P., . (1983). Harrap's 2000 words English dictionary. London: Harrap's.

Chicago

Collin P.H, . 1983. Harrap's 2000 words English dictionary. London: Harrap's.

Harvard

Collin P., . (1983). Harrap's 2000 words English dictionary. London: Harrap's.

MLA

Collin P.H, . Harrap's 2000 words English dictionary. London: Harrap's. 1983.