Παραπομπή σε μορφή APA (7η εκδ.)

Symposium on "Free Boundary Problems: Theory & Applications", Hoffmann, K., & Sprekels, J. (1990). Free boundary problems: Theory and applications. Longman Scientific & Technical : Wiley.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Symposium on "Free Boundary Problems: Theory & Applications", K.-H Hoffmann, και J. Sprekels. Free Boundary Problems: Theory and Applications. Harlow, Essex, England ; New York, N.Y.: Longman Scientific & Technical : Wiley, 1990.

Παραπομπή σε μορφή MLA (9th εκδ.)

Symposium on "Free Boundary Problems: Theory & Applications", et al. Free Boundary Problems: Theory and Applications. Longman Scientific & Technical : Wiley, 1990.