Ptolemy, a. 2. c., Humbach, H., & Ziegler, S. Ptolemy, geography, book 6: Middle East, Central and North Asia, China.
استشهاد بنمط شيكاغوPtolemy, active 2nd century,, Helmut Humbach, و Susanne Ziegler. Ptolemy, Geography, Book 6: Middle East, Central and North Asia, China.
MLA استشهادPtolemy, active 2nd century,, Helmut Humbach, و Susanne Ziegler. Ptolemy, Geography, Book 6: Middle East, Central and North Asia, China.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.