Cita APA (7th ed.)

Kreider, D. L., Kuller, R. G., & Ostberg, D. R. (1968). Elementary differential equations. Addison-Wesley.

Cita Chicago (17th ed.)

Kreider, Donald L., Robert Garlin Kuller, i Donald R. Ostberg. Elementary Differential Equations. Reading: Addison-Wesley, 1968.

Cita MLA (9th ed.)

Kreider, Donald L., et al. Elementary Differential Equations. Addison-Wesley, 1968.