Dyfyniad APA

British Optical Association. (1932). British Optical Association Library and Museum catalogue. Council of the British Optical Association.

Dyfyniad Arddull Chicago

British Optical Association. British Optical Association Library and Museum Catalogue. London: Council of the British Optical Association, 1932.

Dyfyniad MLA

British Optical Association. British Optical Association Library and Museum Catalogue. Council of the British Optical Association, 1932.

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