APA

Dummett P., Hughes J. & Stephenson H. (2014). Life. Hamoshire, United Kindom: National Geographic Learning; Cengage Learning.

Chicago

Dummett Paul, Hughes John and Stephenson Helen. 2014. Life. Hamoshire, United Kindom: National Geographic Learning; Cengage Learning.

Harvard

Dummett P., Hughes J. and Stephenson H. (2014). Life. Hamoshire, United Kindom: National Geographic Learning; Cengage Learning.

MLA

Dummett Paul, Hughes John and Stephenson Helen. Life. Hamoshire, United Kindom: National Geographic Learning; Cengage Learning. 2014.