Horgan, P. (1954). Humble powers. Macmillan.
Cita Chicago (17th ed.)Horgan, Paul. Humble Powers. London: Macmillan, 1954.
Cita MLA (8th ed.)Horgan, Paul. Humble Powers. Macmillan, 1954.
Atenció: Aquestes cites poden no estar 100% correctes.
Horgan, P. (1954). Humble powers. Macmillan.
Cita Chicago (17th ed.)Horgan, Paul. Humble Powers. London: Macmillan, 1954.
Cita MLA (8th ed.)Horgan, Paul. Humble Powers. Macmillan, 1954.