Daniels, R. V. (1966). Studying history: How and why. Prentice-Hall.
Cita Chicago (17th ed.)Daniels, Robert Vincent. Studying History: How and Why. Englewood Cliffs, N.J: Prentice-Hall, 1966.
Cita MLA (9th ed.)Daniels, Robert Vincent. Studying History: How and Why. Prentice-Hall, 1966.
Atenció: Aquestes cites poden no estar 100% correctes.