APA (7th ed.) Citation

Tzamalikos, P. (2006). Origen: Cosmology and ontology of time. Vigiliae Christianae.

Chicago Style (17th ed.) Citation

Tzamalikos, Panagiōtēs. "Origen: Cosmology and Ontology of Time." Vigiliae Christianae 2006.

MLA (8th ed.) Citation

Tzamalikos, Panagiōtēs. "Origen: Cosmology and Ontology of Time." Vigiliae Christianae, 2006.

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