एपीए उद्धरण

Quintana, J. (2010). PET Result Workbook with key. OXFORD.

शिकागो स्टाइल उद्धरण

Quintana, Jenny. PET Result Workbook With Key. OXFORD, 2010.

एमएलए उद्धरण

Quintana, Jenny. PET Result Workbook With Key. OXFORD, 2010.