Gaya APA

Farlow, S, J. (1994). (TEKNIK SIPIL 1) An Introduction To Differential Equations And Their Applications (1). USA: Mc Graw Hiil.

Gaya MLA

Farlow, Stanley, J.. "(TEKNIK SIPIL 1) An Introduction To Differential Equations And Their Applications". 1 USA: Mc Graw Hiil, 1994. .