Dyfyniad APA

Ramsden, E. N. (2001). Calculations for A-level chemistry. Cheltenham, Gt. Britain: Stanley Thornes.

Dyfyniad Arddull Chicago

Ramsden, E. N. Calculations for A-level Chemistry. Cheltenham, Gt. Britain: Stanley Thornes, 2001.

Dyfyniad MLA

Ramsden, E. N. Calculations for A-level Chemistry. Cheltenham, Gt. Britain: Stanley Thornes, 2001.

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