APA Citation

Trejos, A., & Romero, A. (1954). Prothrombin levels in yellow fever. Universidad de Costa Rica.

Chicago Style Citation

Trejos, A., and A. Romero. Prothrombin Levels in Yellow Fever. Universidad de Costa Rica, 1954.

MLA Citation

Trejos, A., and A. Romero. Prothrombin Levels in Yellow Fever. Universidad de Costa Rica, 1954.

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