Gaya APA

Petrovski, I., Silverman, R, A. (1966). Ordinary differential equations . Englewood Cliffs, NJ: Prentice Hall.

Gaya MLA

Petrovski, I.G.., Silverman, Richard, A.. "Ordinary differential equations". Englewood Cliffs, NJ: Prentice Hall, 1966. Text.