Dyfyniad APA

Öpik, A. A. (1970). Nepeid trilobites of the Middle Cambrian of northern Australia. Bureau of Mineral Resources, Geology and Geophysics.

Dyfyniad Arddull Chicago

Öpik, A. A. Nepeid Trilobites of the Middle Cambrian of Northern Australia. Canberra: Bureau of Mineral Resources, Geology and Geophysics, 1970.

Dyfyniad MLA

Öpik, A. A. Nepeid Trilobites of the Middle Cambrian of Northern Australia. Bureau of Mineral Resources, Geology and Geophysics, 1970.

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