Cita APA (7a ed.)

Ackermann, W. (1962). Solvable cases of the decision problem (2nd printing.). North-Holland.

Cita Chicago Style (17a ed.)

Ackermann, W. Solvable Cases of the Decision Problem. 2nd printing. Amsterdam: North-Holland, 1962.

Cita MLA (9a ed.)

Ackermann, W. Solvable Cases of the Decision Problem. 2nd printing. North-Holland, 1962.