Cita APA (7a ed.)

Quintana, J. (2004). New headway english course PET practice tests: Teacher's guide-answer key (Rev. for 2004 update.). Oxford University Press.

Cita Chicago Style (17a ed.)

Quintana, Jenny. New Headway English Course PET Practice Tests: Teacher's Guide-answer Key. Rev. for 2004 update. London: Oxford University Press, 2004.

Cita MLA (9a ed.)

Quintana, Jenny. New Headway English Course PET Practice Tests: Teacher's Guide-answer Key. Rev. for 2004 update. Oxford University Press, 2004.