Gaya APA

Jacobson, W, J, /, I, M. et al (1969). Inquiry into : earth and space science . New York: American Book Company.

Gaya MLA

Jacobson, Willard, J., /, Ilmu-Ilmu, Murni. et al. "Inquiry into : earth and space science". New York: American Book Company, 1969. Monograft.