Dyfyniad APA
Fried-Booth, D. L. (1996). PET: Practice tests; five tests for the Cambrige Preliminary English Test (1a. ed.). Oxford University Press.
Dyfyniad Arddull Chicago
Fried-Booth, Diana L. PET: Practice Tests; Five Tests for the Cambrige Preliminary English Test. 1a. ed. Oxford: Oxford University Press, 1996.
Dyfyniad MLA
Fried-Booth, Diana L. PET: Practice Tests; Five Tests for the Cambrige Preliminary English Test. 1a. ed. Oxford University Press, 1996.
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