Gaya APA

Aki, K., Richards, P, G. (1980). Quantitative Seismology Theory and Methods Volume II . United States of America: United States of America : W. H. Freeman and Company San Francisco.

Gaya MLA

Aki, Keiiti., Richards, Paul, G.. "Quantitative Seismology Theory and Methods Volume II". United States of America: United States of America : W. H. Freeman and Company San Francisco, 1980. Buku.