APA (7th ed.) Citation

Ortigas, T. (1961). What is mathematics?. IN Ortigas, T.Z. [column]. Education Quarterly.

Chicago Style (17th ed.) Citation

Ortigas, T.Z. "What Is Mathematics?. IN Ortigas, T.Z. [column]." Education Quarterly 1961.

MLA (9th ed.) Citation

Ortigas, T.Z. "What Is Mathematics?. IN Ortigas, T.Z. [column]." Education Quarterly, 1961.

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