Cita APA (7th ed.)

Abeler, J., Falk, A., Huffman, D., & Goette, L. (2011). Reference Points and Effort Provision.

Cita Chicago (17th ed.)

Abeler, J., A. Falk, D. Huffman, i L. Goette. Reference Points and Effort Provision. 2011.

Cita MLA (9th ed.)

Abeler, J., et al. Reference Points and Effort Provision. 2011.