Παραπομπή σε μορφή APA (7η εκδ.)

Nuttall, C., & Evans, D. (2016). Pre-intermediate outcomes: Workbook (second edition.). National Geographic Learning Cengage Learning.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Nuttall, Carol, και David Evans. Pre-intermediate Outcomes: Workbook. second edition. Hampshire: National Geographic Learning Cengage Learning, 2016.

Παραπομπή σε μορφή MLA (9th εκδ.)

Nuttall, Carol, και David Evans. Pre-intermediate Outcomes: Workbook. second edition. National Geographic Learning Cengage Learning, 2016.