Cita APA (7a ed.)

Ostrenga, M. R. (1990). Activities: The focal point of total cost management. [s.n.].

Cita Chicago Style (17a ed.)

Ostrenga, Michael R. Activities: The Focal Point of Total Cost Management. [S.l.]: [s.n.], 1990.

Cita MLA (9a ed.)

Ostrenga, Michael R. Activities: The Focal Point of Total Cost Management. [s.n.], 1990.