Hoopes, D. S., & Hoopes, K. R. (1991). Guide to international education in the united states: Formely global guide to international education (2nd ed.). Gale Research Inc..
Citazione stile Chigago Style (17a edizione)Hoopes, David S., e Kathleen R. Hoopes. Guide to International Education in the United States: Formely Global Guide to International Education. 2nd ed. Detroit, New York: Gale Research Inc., 1991.
Citatione MLA (9a ed.)Hoopes, David S., e Kathleen R. Hoopes. Guide to International Education in the United States: Formely Global Guide to International Education. 2nd ed. Gale Research Inc., 1991.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.