Gaya APA

lEVIN,HAROLD,L, . (1983). TAHE EARTH THROUGH TIME . Surabaya, Usaha Nasional: CBS COLLEGE PUBLISHING.

Gaya MLA

lEVIN,HAROLD,L, . "TAHE EARTH THROUGH TIME". Surabaya, Usaha Nasional: CBS COLLEGE PUBLISHING, 1983. Text.