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WikiPedia: Hôn_nhân http://www.britannica.com/EBchecked/topic/366152 http://books.google.com/?id=hR0_CoNj6GAC&pg=RA1-PA... http://books.google.com/books?id=1ha9GgWNmy0C&pg=P... http://books.google.com/books?id=WIzHjpTJgdQC&pg=P... http://www.ncregister.com/site/article/sowing-diss... http://jfh.sagepub.com/cgi/content/short/32/4/343 http://eclectic.ss.uci.edu/~drwhite/worldcul/Codeb... //dx.doi.org/10.1177%2F0363199007304424 //dx.doi.org/10.2307%2F1073379 http://thinkprogress.org/lgbt/2013/09/19/2652771/p...