Cita APA (7a ed.)

Smith, M. S. (1994). Second language learning: Theoretical foundations. Longman.

Cita Chicago Style (17a ed.)

Smith, Michael Sharwood. Second Language Learning: Theoretical Foundations. New York: Longman, 1994.

Cita MLA (9a ed.)

Smith, Michael Sharwood. Second Language Learning: Theoretical Foundations. Longman, 1994.