APA引文

Ludvigsen, R. (1978). The trilobites Bathyurus and Eomonorachus from the Middle Ordovician of Oklahoma and their biofacies significance. Royal Ontario Museum.

Chicago Style (17th ed.) Citation

Ludvigsen, Rolf. The Trilobites Bathyurus and Eomonorachus from the Middle Ordovician of Oklahoma and Their Biofacies Significance. Toronto: Royal Ontario Museum, 1978.

MLA引文

Ludvigsen, Rolf. The Trilobites Bathyurus and Eomonorachus from the Middle Ordovician of Oklahoma and Their Biofacies Significance. Royal Ontario Museum, 1978.

警告：這些引文格式不一定是100％准確.