Dyfyniad APA

Brandt, H., & Sigmund, K. (2005). Indirect reciprocity, image scoring, and moral hazard. National Academy of Sciences.

Dyfyniad Arddull Chicago

Brandt, Hannelore, and Karl Sigmund. Indirect Reciprocity, Image Scoring, and Moral Hazard. National Academy of Sciences, 2005.

Dyfyniad MLA

Brandt, Hannelore, and Karl Sigmund. Indirect Reciprocity, Image Scoring, and Moral Hazard. National Academy of Sciences, 2005.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.