APA (7th ed.) Citation

Pigge, H., Ernsing, R., & Widmann, S. P. (1913). Geschichte des Altertums. Aschendorff.

Chicago Style (17th ed.) Citation

Pigge, Heinrich, Rudolf Ernsing, and Simon Peter Widmann. Geschichte Des Altertums. Münster in Westf: Aschendorff, 1913.

MLA (9th ed.) Citation

Pigge, Heinrich, et al. Geschichte Des Altertums. Aschendorff, 1913.