APA (7th ed.) Citation

Hull, A. L., Machuca, B. G., Méndez, F., Robinett, R. F., Valle, K. M. d., Rojas, P. M., & Fries, C. C. (1953). Study of english as a second language. D. C. Heath.

Chicago Style (17th ed.) Citation

Hull, Adrian L., Belén G. Machuca, Francisca Méndez, Ralph F. Robinett, Katharene M. del Valle, Pauline M. Rojas, and Charles C. Fries. Study of English as a Second Language. Boston: D. C. Heath, 1953.

MLA (9th ed.) Citation

Hull, Adrian L., et al. Study of English as a Second Language. D. C. Heath, 1953.