Dyfyniad APA

Institution, 8. B. S. (1972). Sizes of rolls of photographic black-and-white and colour paper for roll-head printers. London : BSI.

Dyfyniad Arddull Chicago

Institution, 8096 British Standards. Sizes of Rolls of Photographic Black-and-white and Colour Paper for Roll-head Printers. London : BSI, 1972.

Dyfyniad MLA

Institution, 8096 British Standards. Sizes of Rolls of Photographic Black-and-white and Colour Paper for Roll-head Printers. London : BSI, 1972.

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