Cita APA (7a ed.)

Topper, T. P., Guo, J., Clausen, S., Skovsted, C. B., & Zhang, Z. (2019). A stem group echinoderm from the basal Cambrian of China and the origins of Ambulacraria. Nature Portfolio.

Cita Chicago Style (17a ed.)

Topper, Timothy P., Junfeng Guo, Sébastien Clausen, Christian B. Skovsted, y Zhifei Zhang. A Stem Group Echinoderm from the Basal Cambrian of China and the Origins of Ambulacraria. Nature Portfolio, 2019.

Cita MLA (8a ed.)

Topper, Timothy P., et al. A Stem Group Echinoderm from the Basal Cambrian of China and the Origins of Ambulacraria. Nature Portfolio, 2019.