APA citáció

Bröck R & Jürgensen Helmut. (1973). On the computation of union-extensions of finite semigroups.

Chicago Style (17th ed.) Citation

Bröck R and Jürgensen Helmut. On the Computation of Union-extensions of Finite Semigroups. 1973.

MLA idézés

Bröck R and Jürgensen Helmut. On the Computation of Union-extensions of Finite Semigroups. 1973.