Cita APA

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

Chicago Style (17th ed.) Citation

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

Cita MLA

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