Gaya APA

Pollard, E, C., Huston, D, C. (1969). Pysics an Introduction (second printing). USA: OXFROD UNIVERSITY PRESS.

Gaya MLA

Pollard, Ernest, C.., Huston, Douglas, C.. "Pysics an Introduction". second printing USA: OXFROD UNIVERSITY PRESS, 1969. Text Book Sipil.