APA

Hashemi L., Thomas B., . (1997). Cambridge Practic Tests for PET 1. New York: Cambridge University Press.

Chicago

Hashemi L, Thomas B, . 1997. Cambridge Practic Tests for PET 1. New York: Cambridge University Press.

Harvard

Hashemi L., Thomas B., . (1997). Cambridge Practic Tests for PET 1. New York: Cambridge University Press.

MLA

Hashemi L, Thomas B, . Cambridge Practic Tests for PET 1. New York: Cambridge University Press. 1997.