APA-Zitierstil (7. Ausg.)

Sommer, P., Heater, D., & Owen, G. (1978). Countries, continents and communities (1. publ., reprinted and updated.). Harrap.

Chicago-Zitierstil (17. Ausg.)

Sommer, Peter, Derek Heater, und Gwyneth Owen. Countries, Continents and Communities. 1. publ., reprinted and updated. Walton-on-Thames, Surrey [u.a.]: Harrap, 1978.

MLA-Zitierstil (9. Ausg.)

Sommer, Peter, et al. Countries, Continents and Communities. 1. publ., reprinted and updated. Harrap, 1978.