Cita APA (7a ed.)

Kantor, J. R. (1952). An objective psychology of grammar. The Principia Press, Inc.

Cita Chicago Style (17a ed.)

Kantor, J. R. An Objective Psychology of Grammar. Bloomington, Indiana ; Evanston, Illinois: The Principia Press, Inc, 1952.

Cita MLA (9a ed.)

Kantor, J. R. An Objective Psychology of Grammar. The Principia Press, Inc, 1952.