APA (7th ed.) Citation

Ptolemaeus, C. 1., & Skelton, R. A. (1477). Cosmographia Theatrum orbis terrarum.

Chicago Style (17th ed.) Citation

Ptolemaeus, Claudius 100-178, and R. A. Skelton. "Cosmographia." Theatrum Orbis Terrarum 1477.

MLA (8th ed.) Citation

Ptolemaeus, Claudius 100-178, and R. A. Skelton. "Cosmographia." Theatrum Orbis Terrarum, 1477.

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