Cita APA (7th ed.)

Keith-Lucas, A. (1972). Giving and taking help. University of North Carolina.

Cita Chicago (17th ed.)

Keith-Lucas, Alan. Giving and Taking Help. Chapel hill: University of North Carolina, 1972.

Cita MLA (9th ed.)

Keith-Lucas, Alan. Giving and Taking Help. University of North Carolina, 1972.