APA

Stephenson H., Dummet P. & Hughes J. (2014). Life: beginner. Hampshire: Cengage Learning; National Geographic Learning.

Chicago

Stephenson Helen, Dummet Paul and Hughes John. 2014. Life: beginner. Hampshire: Cengage Learning; National Geographic Learning.

Harvard

Stephenson H., Dummet P. and Hughes J. (2014). Life: beginner. Hampshire: Cengage Learning; National Geographic Learning.

MLA

Stephenson Helen, Dummet Paul and Hughes John. Life: beginner. Hampshire: Cengage Learning; National Geographic Learning. 2014.