Watkin, D., & Cooper, R. (2020). Howard Flack and the Flack Parameter. MDPI.
Cita Chicago (17th ed.)Watkin, DJ, i RI Cooper. Howard Flack and the Flack Parameter. MDPI, 2020.
Cita MLA (9th ed.)Watkin, DJ, i RI Cooper. Howard Flack and the Flack Parameter. MDPI, 2020.
Atenció: Aquestes cites poden no estar 100% correctes.