Dyfyniad APA

Nicholl, J. P., & Williams, B. T. (1983). Popular marathons: Forecasting casualties.

Dyfyniad Arddull Chicago

Nicholl, J P., and B T. Williams. Popular Marathons: Forecasting Casualties. 1983.

Dyfyniad MLA

Nicholl, J P., and B T. Williams. Popular Marathons: Forecasting Casualties. 1983.

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