Thorpe, E. A., & Thorpe, S. A. (2000). Wheelers general knowledge manual.
Dyfyniad Arddull ChicagoThorpe, Edgar; Author, and Showick; Author Thorpe. Wheelers General Knowledge Manual. New Delhi, Wheeler publishing, 2000.
Dyfyniad MLAThorpe, Edgar; Author, and Showick; Author Thorpe. Wheelers General Knowledge Manual. 2000.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.