Dyfyniad APA
ebrary, Inc. (2003). Diagnosis and control of Johne's disease. National Academies Press.
Dyfyniad Arddull Chicago
ebrary, Inc. Diagnosis and Control of Johne's Disease. Washington, DC ; [Great Britain]: National Academies Press, 2003.
Dyfyniad MLA
ebrary, Inc. Diagnosis and Control of Johne's Disease. National Academies Press, 2003.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.