Παραπομπή σε μορφή APA (7η εκδ.)

Coddington, E. A., & Snoo, h. S. V. (1981). Regular boundary value problems associated with pairs of ordinary differential expressions. Springer.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Coddington, Earl A., και hendrik S. V. Snoo. Regular Boundary Value Problems Associated with Pairs of Ordinary Differential Expressions. Berlín: Springer, 1981.

Παραπομπή σε μορφή MLA (9th εκδ.)

Coddington, Earl A., και hendrik S. V. Snoo. Regular Boundary Value Problems Associated with Pairs of Ordinary Differential Expressions. Springer, 1981.