Dyfyniad APA

Helpman, E., & Persson, T. (1998). Lobbying and legislative bargaining. National Bureau of Economic Research.

Dyfyniad Arddull Chicago

Helpman, Elhanan, and Torsten Persson. Lobbying and Legislative Bargaining. Cambridge: National Bureau of Economic Research, 1998.

Dyfyniad MLA

Helpman, Elhanan, and Torsten Persson. Lobbying and Legislative Bargaining. National Bureau of Economic Research, 1998.

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