APA цитиране

Lightman, A. P. (1993). Ancient light: Our changing view of the universe. Cambridge, MA: Harvard university press.

Чикагска система за цитиране

Lightman, Alan P. Ancient Light: Our Changing View of the Universe. Cambridge, MA: Harvard university press, 1993.

MLA формат за цитиране

Lightman, Alan P. Ancient Light: Our Changing View of the Universe. Cambridge, MA: Harvard university press, 1993.