Gaya APA

Goldsmith, D., Owen, T. (2001). The Search for Life in The Universe : Donald Goldsmith, Tobias Owen (Ed.3). New York: Mc Graw Hill.

Gaya MLA

Goldsmith, Donald., Owen, Tobias.. "The Search for Life in The Universe : Donald Goldsmith, Tobias Owen". Ed.3 New York: Mc Graw Hill, 2001. Buku.