Cita APA (7a ed.)
National Geographic Channels International, Pioneer Productions, & Macdonald, T. (2005). In the womb. National Geographic Channel.
Cita Chicago Style (17a ed.)
National Geographic Channels International, Pioneer Productions, y Toby Macdonald. In the Womb. [Washington, D.C.]: National Geographic Channel, 2005.
Cita MLA (9a ed.)
National Geographic Channels International, et al. In the Womb. National Geographic Channel, 2005.
警告：這些引文格式不一定是100％准確.