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

APA Citation Edition Citation

Llewelyn, S. (1993). Did the Ptolemaic postal system work to a timetable? -.

Chicago Citation Edition Citation

Llewelyn, S.R. Did the Ptolemaic Postal System Work to a Timetable? -. 1993.

MLA Citation Edition Citation

Llewelyn, S.R. Did the Ptolemaic Postal System Work to a Timetable? -. 1993.