Cita APA (7a ed.)

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..

Cita Chicago Style (17a ed.)

AETN Productions (Ark.), History Channel (Television Network), Popular Arts Entertainment Inc, Michael Guillen, y Melody Shafir. The Ancient Maya: The Tools of Astronomy. [S.l.: s.n., 2006.

Cita MLA (9a ed.)

AETN Productions (Ark.), et al. The Ancient Maya: The Tools of Astronomy. s.n., 2006.