Dyfyniad APA

Lane, B., & Gregg, W. (2004). The encyclopedia of mass murder: A chilling record of the world's worst cases. London: Robinson.

Dyfyniad Arddull Chicago

Lane, Brian, και Wilfred‏ Gregg. The Encyclopedia of Mass Murder: A Chilling Record of the World's Worst Cases. London: Robinson, 2004.

Dyfyniad MLA

Lane, Brian, και Wilfred‏ Gregg. The Encyclopedia of Mass Murder: A Chilling Record of the World's Worst Cases. London: Robinson, 2004.

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