APA (7th ed.) Citation
Maps.com (Firm) & ebrary, Inc. (1999). Trade routes in the Indian Ocean, c. 500-1000 CE. Maps.com.
Chicago Style (17th ed.) Citation
Maps.com (Firm) and Inc ebrary. Trade Routes in the Indian Ocean, C. 500-1000 CE. [S.l.]: Maps.com, 1999.
MLA (9th ed.) Citation
Maps.com (Firm) and Inc ebrary. Trade Routes in the Indian Ocean, C. 500-1000 CE. Maps.com, 1999.
Warning: These citations may not always be 100% accurate.