Gaya APA

Boyce, W, E. (2003). (TEKNIK SIPIL 1) Elementary Differential Equations and Boundary Value Problems (1). New Jersey: John Wiley & Sons, Inc..

Gaya MLA

Boyce, William, E.. "(TEKNIK SIPIL 1) Elementary Differential Equations and Boundary Value Problems". 1 New Jersey: John Wiley & Sons, Inc., 2003. .