Citazione Stile APA (7a Edizione)

Pym, J., Renaud, M., & Pitt, B. (1992). We are the world: A resource book for geography teachers. Materials Development Project.

Citazione stile Chigago Style (17a edizione)

Pym, June, Mark Renaud, e Bridget Pitt. We Are the World: A Resource Book for Geography Teachers. Bellville: Materials Development Project, 1992.

Citatione MLA (9a ed.)

Pym, June, et al. We Are the World: A Resource Book for Geography Teachers. Materials Development Project, 1992.