Petheam, R. J. (1989). Approaches to research on draught animal power in Indonesia, ethiopia and Australia. Townsville, Australia: ACIAR Draught Animal Power Project, James Cook University.
Dyfyniad Arddull ChicagoPetheam, R. J. Approaches to Research On Draught Animal Power in Indonesia, Ethiopia and Australia. Townsville, Australia: ACIAR Draught Animal Power Project, James Cook University, 1989.
Dyfyniad MLAPetheam, R. J. Approaches to Research On Draught Animal Power in Indonesia, Ethiopia and Australia. Townsville, Australia: ACIAR Draught Animal Power Project, James Cook University, 1989.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.