Citazione Stile APA (7a Edizione)

Smith, R. W., & Hipp, D. R. (1994). Spoken natural language dialog systems: A practical approach. Oxford University Press.

Citazione stile Chigago Style (17a edizione)

Smith, Ronnie W., e D. Richard Hipp. Spoken Natural Language Dialog Systems: A Practical Approach. New York: Oxford University Press, 1994.

Citatione MLA (9a ed.)

Smith, Ronnie W., e D. Richard Hipp. Spoken Natural Language Dialog Systems: A Practical Approach. Oxford University Press, 1994.