Cita APA (7a ed.)

Handy, R., Harwood, E. C., Dewey, J., & Ratner, J. (1973). Useful procedures of inquiry. Behavioral Research Council.

Cita Chicago Style (17a ed.)

Handy, Rollo, Edward Crosby Harwood, John Dewey, y Joseph Ratner. Useful Procedures of Inquiry. Great Barrington, Massachusetts: Behavioral Research Council, 1973.

Cita MLA (9a ed.)

Handy, Rollo, et al. Useful Procedures of Inquiry. Behavioral Research Council, 1973.