APA Citation

Villalobos, C. R. (1973). Ptychophallus costaricensis, a new freshwater crab from Costa Rica. Universidad de Costa Rica.

Chicago Style Citation

Villalobos, Carlos R. Ptychophallus Costaricensis, a New Freshwater Crab From Costa Rica. Universidad de Costa Rica, 1973.

MLA Citation

Villalobos, Carlos R. Ptychophallus Costaricensis, a New Freshwater Crab From Costa Rica. Universidad de Costa Rica, 1973.

Warning: These citations may not always be 100% accurate.