Dyfyniad APA
Churchill, R. V. (1972). Operational mathematics (3rd ed.). Mc Graw -Hill.
Dyfyniad Arddull Chicago
Churchill, Ruel V. Operational Mathematics. 3rd ed. Tokyo: Mc Graw -Hill, 1972.
Dyfyniad MLA
Churchill, Ruel V. Operational Mathematics. 3rd ed. Mc Graw -Hill, 1972.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.