APA (7th ed.) Citation

Ptolomeo, C., & Skelton, R. (1966). Geographia. Theatrum Orbis Terrarum.

Chicago Style (17th ed.) Citation

Ptolomeo, Claudio, and R.A Skelton. Geographia. Amsterdam: Theatrum Orbis Terrarum, 1966.

MLA (9th ed.) Citation

Ptolomeo, Claudio, and R.A Skelton. Geographia. Theatrum Orbis Terrarum, 1966.

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