Παραπομπή σε μορφή APA (7η εκδ.)

Kečkić, J. D. (1970). A differential operator and its applications to partial differential equations and nonanalytic functions. Univerzitet, Elektrotehnički fakultet].

Παραπομπή σε μορφή Chicago (17η εκδ.)

Kečkić, Jovan D. A Differential Operator and Its Applications to Partial Differential Equations and Nonanalytic Functions. [Beograd: Univerzitet, Elektrotehnički fakultet], 1970.

Παραπομπή σε μορφή MLA (8th εκδ.)

Kečkić, Jovan D. A Differential Operator and Its Applications to Partial Differential Equations and Nonanalytic Functions. Univerzitet, Elektrotehnički fakultet], 1970.