Citazione Stile APA (7a Edizione)

Yapp, M., Killingray, M., & O'Connor, E. (1982). Harrap world history programme (Teachers' guide, 1. publ., reprinted.). Harrap.

Citazione stile Chigago Style (17a edizione)

Yapp, Malcolm, Margaret Killingray, e Edmund O'Connor. Harrap World History Programme. Teachers' guide, 1. publ., reprinted. London: Harrap, 1982.

Citatione MLA (9a ed.)

Yapp, Malcolm, et al. Harrap World History Programme. Teachers' guide, 1. publ., reprinted. Harrap, 1982.