Gaya APA

Boyce, W, E., DiPrima, R, C. (2009). Elementary Differential Equations and Boundary Value Problems . United States of America: Laurie Rosatone.

Gaya MLA

Boyce, William, E.., DiPrima, Richard, C.. "Elementary Differential Equations and Boundary Value Problems". United States of America: Laurie Rosatone, 2009. Text.