Gaya APA

Saff, B, E., Nagle, R, K. (1996). Fundamentals of differential equation and bondary value problems / R. Kent Nagle, Edward B. Saff (Ed.ke-2). Massachusetts: .

Gaya MLA

Saff, B., Edward., Nagle, R., Kent. "Fundamentals of differential equation and bondary value problems / R. Kent Nagle, Edward B. Saff". Ed.ke-2 Massachusetts: , 1996. Textbook.