Magnus, W., & Winkler, S. (1966). Hill's equation. Interscience Pub.
Cita Chicago (17th ed.)Magnus, Wilhelm, i Stanley Winkler. Hill's Equation. New York: Interscience Pub, 1966.
Cita MLA (9th ed.)Magnus, Wilhelm, i Stanley Winkler. Hill's Equation. Interscience Pub, 1966.
Atenció: Aquestes cites poden no estar 100% correctes.