Παραπομπή APA

Leech,, G. e. a. (1982). English grammar for today (1st.). Macmillan.

Παραπομπή Chicago Style

Leech,, Geoffrey et al. English Grammar for Today. 1st. London: Macmillan, 1982.

Παραπομπή MLA

Leech,, Geoffrey et al. English Grammar for Today. 1st. Macmillan, 1982.