Nielsen, H. (1998). The leap year concept in the first descriptions of the Aztec Calendar. Temenos, 34, 141-166.
Chicago Style (17th ed.) CitationNielsen, Hjørdis. "The Leap Year Concept in the First Descriptions of the Aztec Calendar." Temenos 34 (1998): 141-166.
MLA (8th ed.) CitationNielsen, Hjørdis. "The Leap Year Concept in the First Descriptions of the Aztec Calendar." Temenos, vol. 34, 1998, pp. 141-166.
Warning: These citations may not always be 100% accurate.