APA Citation

Pittier, H. F. 1., & Pittier, H. F. 1. Numeral systems of the Costa Rican Indians.

Chicago Style Citation

Pittier, Henry Francois 1857-1950, and Henry Francois 1857-1950 Pittier. Numeral Systems of the Costa Rican Indians.

MLA Citation

Pittier, Henry Francois 1857-1950, and Henry Francois 1857-1950 Pittier. Numeral Systems of the Costa Rican Indians.

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