APA
Parker J., Parker D., . (2007). Eyewitness companion: astrology. New York: DK Pub.
Chicago
Parker Julia, Parker Derek, . 2007. Eyewitness companion: astrology. New York: DK Pub.
Harvard
Parker J., Parker D., . (2007). Eyewitness companion: astrology. New York: DK Pub.
MLA
Parker Julia, Parker Derek, . Eyewitness companion: astrology. New York: DK Pub. 2007.