Lymington, J. (1981). The power ball. Hale.
Cita Chicago (17th ed.)Lymington, John. The Power Ball. London: Hale, 1981.
Cita MLA (8th ed.)Lymington, John. The Power Ball. Hale, 1981.
Atenció: Aquestes cites poden no estar 100% correctes.
Cita APA (7th ed.)