APA (7th ed.) Citation

Hatzichristos, T., Darra, A., & Kostellou, A. Development of a Geodemographic System for Attica, Greece. European Association of Geographers.

Chicago Style (17th ed.) Citation

Hatzichristos, Thomas, Athanasia Darra, and Anastasia Kostellou. Development of a Geodemographic System for Attica, Greece. European Association of Geographers.

MLA (9th ed.) Citation

Hatzichristos, Thomas, et al. Development of a Geodemographic System for Attica, Greece. European Association of Geographers.

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