Cita APA (7a ed.)

Honan, S., & Mulholland, S. (2016). Planet & people (Third edition.). Mentor Books.

Cita Chicago Style (17a ed.)

Honan, Sue, y Sue Mulholland. Planet & People. Third edition. Dublin: Mentor Books, 2016.

Cita MLA (9a ed.)

Honan, Sue, y Sue Mulholland. Planet & People. Third edition. Mentor Books, 2016.