Dyfyniad APA

Buchanan, J. M., Brennan, H. G., & Tollison, R. D. (1979). What should economists do? Liberty Press.

Dyfyniad Arddull Chicago

Buchanan, James M., H. Goeffrey Brennan, and Robert D. Tollison. What Should Economists Do? Indianapolis: Liberty Press, 1979.

Dyfyniad MLA

Buchanan, James M., et al. What Should Economists Do? Liberty Press, 1979.

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