Cita APA

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

Chicago Style Citation

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

Cita MLA

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