Cita APA (7a ed.)

Koopman, W. F. (1987). Explanation and linguistic change. John Benjamins.

Cita Chicago Style (17a ed.)

Koopman, W. F. Explanation and Linguistic Change. Amsterdam [etc.]: John Benjamins, 1987.

Cita MLA (9a ed.)

Koopman, W. F. Explanation and Linguistic Change. John Benjamins, 1987.