Cita APA (7a ed.)

Barrett, E. B. (1911). Motive-force and motivation-tracks: A research in will psychology. Longmans, Green.

Cita Chicago Style (17a ed.)

Barrett, E. Boyd. Motive-force and Motivation-tracks: A Research in Will Psychology. London [etc.]: Longmans, Green, 1911.

Cita MLA (9a ed.)

Barrett, E. Boyd. Motive-force and Motivation-tracks: A Research in Will Psychology. Longmans, Green, 1911.