Citazione Stile APA (7a Edizione)

Hadley, A. O. (1993). Research in language learning: Principles, processes, and prospects. National Textbook Company.

Citazione stile Chigago Style (17a edizione)

Hadley, Alice Omaggio. Research in Language Learning: Principles, Processes, and Prospects. Lincolnwood: National Textbook Company, 1993.

Citatione MLA (9a ed.)

Hadley, Alice Omaggio. Research in Language Learning: Principles, Processes, and Prospects. National Textbook Company, 1993.