Gaya APA

Ashford, T, A. (1967). The Physical Sciences : From Atom To The Stars, 2nd Edition . New York: Holt, Rinehart and Winston.

Gaya MLA

Ashford, Theodore, Askounes. "The Physical Sciences : From Atom To The Stars, 2nd Edition". New York: Holt, Rinehart and Winston, 1967. Text.