APA (7th ed.) Citation

Perera, S. (1993). English. [s.n.].

Chicago Style (17th ed.) Citation

Perera, S.M.G. English. [s.l.]: [s.n.], 1993.

MLA (9th ed.) Citation

Perera, S.M.G. English. [s.n.], 1993.

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