Cita APA (7a ed.)

Perlmutter, D. M., Postal, P. M., & Joseph, B. D. (1990). Studies in relational grammar. University Press.

Cita Chicago Style (17a ed.)

Perlmutter, David M., Paul Martin Postal, y Brian D. Joseph. Studies in Relational Grammar. Chicago [etc.]: University Press, 1990.

Cita MLA (9a ed.)

Perlmutter, David M., et al. Studies in Relational Grammar. University Press, 1990.