Tolong jelaskan mengenai Rujukan dari Chang dan Eng Bunker

Halaman 27-28 dan 81, The Chinese in America: A Narrative History, Iris Chang, Viking, 2003, hardcover, 496 pages, ISBN 0-670-03123-2

Adapted from the Internet-Encyclopedia article, "Chang and Eng Bunker" www.internet-encyclopedia.org -- Chang and Eng Bunker July 8, 2003