Duncan, S., & Gull, C. A. E. R. (1911). The complete wildfowler. G. Richards, ltd.
Dyfyniad Arddull ChicagoDuncan, Stanley, and Cyril Arthur Edward Ranger Gull. The Complete Wildfowler. London: G. Richards, ltd, 1911.
Dyfyniad MLADuncan, Stanley, and Cyril Arthur Edward Ranger Gull. The Complete Wildfowler. G. Richards, ltd, 1911.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.