Dyfyniad APA

Holstein-Friesian Association of America & Houghton, F. L. Holstein-Friesian herd-book. Holstein-Friesian Association of American.

Dyfyniad Arddull Chicago

Holstein-Friesian Association of America and Frederick Lowell Houghton. Holstein-Friesian Herd-book. Brattleboro, Vt. [etc.]: Holstein-Friesian Association of American.

Dyfyniad MLA

Holstein-Friesian Association of America and Frederick Lowell Houghton. Holstein-Friesian Herd-book. Holstein-Friesian Association of American.

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