Media, B. E. (1986). How we know the earth's shape [kasetvideo]. New York : Phoenix Films.
芝加哥风格引文Media, BFA Educational. How We Know the Earth's Shape [kasetvideo]. New York : Phoenix Films, 1986.
MLA引文Media, BFA Educational. How We Know the Earth's Shape [kasetvideo]. New York : Phoenix Films, 1986.
警告：这些引文格式不一定是100％准确.