Dyfyniad APA

Hansbrough, J. R. (1936). The Tympanis canker of red pine. Yale University.

Dyfyniad Arddull Chicago

Hansbrough, John Raymond. The Tympanis Canker of Red Pine. New Heaven: Yale University, 1936.

Dyfyniad MLA

Hansbrough, John Raymond. The Tympanis Canker of Red Pine. Yale University, 1936.

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