AETN Productions (Ark.), History Channel (Television Network), Popular Arts Entertainment Inc, Guillen, M., & Shafir, M. (2006). The ancient Maya: The tools of astronomy. s.n..
Chicago Style (17th ed.) CitationAETN Productions (Ark.), History Channel (Television Network), Popular Arts Entertainment Inc, Michael Guillen, and Melody Shafir. The Ancient Maya: The Tools of Astronomy. [S.l.: s.n., 2006.
MLA (9th ed.) CitationAETN Productions (Ark.), et al. The Ancient Maya: The Tools of Astronomy. s.n., 2006.
Warning: These citations may not always be 100% accurate.