Gaya APA

Slawinski, M, A. (2018). Waves and Rays in Seismology : Answers to unasked questions second edition (2). Singapore: World Scientific Publishing Co..

Gaya MLA

Slawinski, Michael, A.. "Waves and Rays in Seismology : Answers to unasked questions second edition". 2 Singapore: World Scientific Publishing Co., 2018. Text.