Hughes, C. F. C. (1973). Tactics and teamwork. EPPU.
Cita Chicago (17th ed.)Hughes, Charles F. C. Tactics and Teamwork. EPPU, 1973.
Cita MLA (9th ed.)Hughes, Charles F. C. Tactics and Teamwork. EPPU, 1973.
Atenció: Aquestes cites poden no estar 100% correctes.