Παραπομπή σε μορφή APA (7η εκδ.)

Bellman, R., & Cooke, K. (1959). Asymptotic behavior of solutions of differential-difference equations. American Mathematical Society.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Bellman, Richard, και Kenneth Cooke. Asymptotic Behavior of Solutions of Differential-difference Equations. Providence (R.I.): American Mathematical Society, 1959.

Παραπομπή σε μορφή MLA (8th εκδ.)

Bellman, Richard, και Kenneth Cooke. Asymptotic Behavior of Solutions of Differential-difference Equations. American Mathematical Society, 1959.