Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (8a ed.)

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