Gaya APA

Kramer, S, L. (1996). (TEKNIK SIPIL 1) Geotechnical Earthquake Engineering (1). New Jersey: Prentice Hall International.

Gaya MLA

Kramer, Steven, L.. "(TEKNIK SIPIL 1) Geotechnical Earthquake Engineering". 1 New Jersey: Prentice Hall International, 1996. .