Watkin, D., & Cooper, R. (2020). Howard Flack and the Flack Parameter. MDPI.
芝加哥风格引文Watkin, DJ, 与 RI Cooper. Howard Flack and the Flack Parameter. MDPI, 2020.
MLA引文Watkin, DJ, 与 RI Cooper. Howard Flack and the Flack Parameter. MDPI, 2020.
警告：这些引文格式不一定是100％准确.