APA (7th ed.) Citation

Martínez, S. (2005). Extinct and extant sand dollars (Clypeasteroida: Echinoidea) from Uruguay. Universidad de Costa Rica.

Chicago Style (17th ed.) Citation

Martínez, Sergio. Extinct and Extant Sand Dollars (Clypeasteroida: Echinoidea) from Uruguay. Universidad de Costa Rica, 2005.

MLA (9th ed.) Citation

Martínez, Sergio. Extinct and Extant Sand Dollars (Clypeasteroida: Echinoidea) from Uruguay. Universidad de Costa Rica, 2005.

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