Rapp , D. . .. (1991). Solar energy. Prentice _ Hall.
Cita Chicago (17th ed.)Rapp , Donald. Solar Energy. Englewood Cliffs , N. J.: Prentice _ Hall, 1991.
Cita MLA (9th ed.)Rapp , Donald. Solar Energy. Prentice _ Hall, 1991.
Atenció: Aquestes cites poden no estar 100% correctes.