Cita APA (7a ed.)

Nehls, D. (1978). Studies in descriptive English grammar. Julius Groos.

Cita Chicago Style (17a ed.)

Nehls, Dietrich. Studies in Descriptive English Grammar. Heidelberg: Julius Groos, 1978.

Cita MLA (9a ed.)

Nehls, Dietrich. Studies in Descriptive English Grammar. Julius Groos, 1978.