APA-viite

Betsis, A. (2014). Succeed in Cambridge English Preliminary (PET): Preliminary English test (Pet). 10 Practice Tests. Thành phố Hồ Chí Minh: Tổng hợp.

Chicago-tyylinen lähdeviittaus

Betsis, Andrew. Succeed in Cambridge English Preliminary (PET): Preliminary English Test (Pet). 10 Practice Tests. Thành phố Hồ Chí Minh: Tổng hợp, 2014.

MLA-viite

Betsis, Andrew. Succeed in Cambridge English Preliminary (PET): Preliminary English Test (Pet). 10 Practice Tests. Thành phố Hồ Chí Minh: Tổng hợp, 2014.

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