Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.

APA Citation Edition Citation

Grummond, N. d. (1977). A seventeenth-century book on classical gems.

Chicago Citation Edition Citation

Grummond, N.T. de. A Seventeenth-century Book on Classical Gems. 1977.

MLA Citation Edition Citation

Grummond, N.T. de. A Seventeenth-century Book on Classical Gems. 1977.