Cita APA (7a ed.)

Greenall, S., & Delestrée, A. (1998). Reward: Elementary. Grammar and Vocabulary. Macmillan Heinemann.

Cita Chicago Style (17a ed.)

Greenall, Simon, y Anne Delestrée. Reward: Elementary. Grammar and Vocabulary. Oxford: Macmillan Heinemann, 1998.

Cita MLA (9a ed.)

Greenall, Simon, y Anne Delestrée. Reward: Elementary. Grammar and Vocabulary. Macmillan Heinemann, 1998.