Gaya APA
Stein, S., Wysession, M. (2003).
An Introduction to Seismology, Earthquakes, and Earth Structure (September 2002).
AUSTRALIA:
Blackwell Publishing.
Gaya MLA
Stein, Seth., Wysession, Michael.
"An Introduction to Seismology, Earthquakes, and Earth Structure".
September 2002
AUSTRALIA:
Blackwell Publishing,
2003.
Buku.