Cita APA (7a ed.)

Klein, E. C. (1993). Toward second language acquisition: A study of null-prep. Kluwer Academic.

Cita Chicago Style (17a ed.)

Klein, Elaine C. Toward Second Language Acquisition: A Study of Null-prep. Dordrecht [etc.]: Kluwer Academic, 1993.

Cita MLA (9a ed.)

Klein, Elaine C. Toward Second Language Acquisition: A Study of Null-prep. Kluwer Academic, 1993.