Cita APA (7a ed.)

Elsworth, S. (2006). Energy 2: Wordstore. Longman.

Cita Chicago Style (17a ed.)

Elsworth, Steve. Energy 2: Wordstore. England: Longman, 2006.

Cita MLA (8a ed.)

Elsworth, Steve. Energy 2: Wordstore. Longman, 2006.