Cita APA (7a ed.)

Koehler, R. W. (1991). Triple-threat strategy: Firms need direct costing and contribution approaches as well as ABC. [s.n.].

Cita Chicago Style (17a ed.)

Koehler, Robert W. Triple-threat Strategy: Firms Need Direct Costing and Contribution Approaches as Well as ABC. [S.l.]: [s.n.], 1991.

Cita MLA (9a ed.)

Koehler, Robert W. Triple-threat Strategy: Firms Need Direct Costing and Contribution Approaches as Well as ABC. [s.n.], 1991.