Gaya APA

Nagle, R, K., David, I, S, E, B, S, I, S, A. (2004). Fundamentals of differential equations and boundary value problems . New York: .

Gaya MLA

Nagle, R., Kent., David, I., Saff,, Edward, B., Saff, II., Snider,, Arthur. "Fundamentals of differential equations and boundary value problems". New York: , 2004. Text.