Citazione APA

Fishman, J. A., & Ferguson, C. A. G. (1968). Language Problems of Developing Nations. Wiley Eastern.

Stile di citazione Chicago

Fishman, Joshua A., e Charles A Gupta Ferguson. Language Problems of Developing Nations. New York: Wiley Eastern, 1968.

Citazione MLA

Fishman, Joshua A., e Charles A Gupta Ferguson. Language Problems of Developing Nations. Wiley Eastern, 1968.