Dyfyniad APA

Risley, R. (1971). Tropical marine aquaria: The natural system. George Allen & Unwin.

Dyfyniad Arddull Chicago

Risley, R.A. Tropical Marine Aquaria: The Natural System. London: George Allen & Unwin, 1971.

Dyfyniad MLA

Risley, R.A. Tropical Marine Aquaria: The Natural System. George Allen & Unwin, 1971.

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