Cita APA (7th ed.)

PRYOR FREED. (1987). ENERGETIC MANAGER. PRENTICE -HALL INTERNATIONAL, INC.

Cita Chicago (17th ed.)

PRYOR FREED. ENERGETIC MANAGER. NEW JERSEY: PRENTICE -HALL INTERNATIONAL, INC, 1987.

Cita MLA (9th ed.)

PRYOR FREED. ENERGETIC MANAGER. PRENTICE -HALL INTERNATIONAL, INC, 1987.