Cita APA (7th ed.)
Martin, L. A., Merrick, H. H., & Ullman, J. R. Lands and Peoples: The World in Color : British Isles, Western Europe. Grolier.
Cita Chicago (17th ed.)
Martin, Lowell A., Helen Hynson Merrick, i James Ramsey Ullman. Lands and Peoples: The World in Color : British Isles, Western Europe. Nueva York, EUA: Grolier.
Cita MLA (9th ed.)
Martin, Lowell A., et al. Lands and Peoples: The World in Color : British Isles, Western Europe. Grolier.
Atenció: Aquestes cites poden no estar 100% correctes.