Παραπομπή APA

Neuhold, E., & Paul, M. (1991). Formal discription of programming concepts. Springer -Verlag.

Παραπομπή Chicago Style

Neuhold, E.J, και M. Paul. Formal Discription of Programming Concepts. Berlin: Springer -Verlag, 1991.

Παραπομπή MLA

Neuhold, E.J, και M. Paul. Formal Discription of Programming Concepts. Springer -Verlag, 1991.