Van der Leeden, F., Troise, F. L., & Todd, D. K. (1990). The water encyclopedia (2nd ed.). Lewis Publishers.
Cita Chicago (17th ed.)Van der Leeden, Frits, Fred Louis Troise, i David Keith Todd. The Water Encyclopedia. 2nd ed. Chelsea, Mich: Lewis Publishers, 1990.
Cita MLA (9th ed.)Van der Leeden, Frits, et al. The Water Encyclopedia. 2nd ed. Lewis Publishers, 1990.
Atenció: Aquestes cites poden no estar 100% correctes.