Παραπομπή APA

Hughes, J., Stephenson, H., & Dummett, P. (2015). Life elementary: Student's book with online workbook. Singapore: Cengage learning Asia Pte Ltd.

Παραπομπή Chicago Style

Hughes, John, Helen Stephenson, και Paul Dummett. Life Elementary: Student's Book With Online Workbook. Singapore: Cengage learning Asia Pte Ltd, 2015.

Παραπομπή MLA

Hughes, John, Helen Stephenson, και Paul Dummett. Life Elementary: Student's Book With Online Workbook. Singapore: Cengage learning Asia Pte Ltd, 2015.

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