Herriot, James, 1916-1995
Cat stories
PT Gramedia Pustaka Utama, 2019
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Coddington, Earl A.
An introduction to ordinary differential equations
Dover, 1989
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Ross, Shepley L.
Introduction to ordinary differential equations
John Wiley & Sons, 1980
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Birkhoff, Garrett
Ordinary differential equations
John Wiley & Sons, 1978
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Ross, Shepley L.
Introduction to ordinary differenstila equations
"New York: John Wiley & Sons, 1981",
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