Cita APA (7a ed.)

Barret, E. B. (1911). Motive-force and motivation-tracks: A research in will Psychology. New York.

Cita Chicago Style (17a ed.)

Barret, E. Boyd. Motive-force and Motivation-tracks: A Research in Will Psychology. London: New York, 1911.

Cita MLA (9a ed.)

Barret, E. Boyd. Motive-force and Motivation-tracks: A Research in Will Psychology. New York, 1911.