"A Quadruple Jump on Ice". The New York Times. Associated Press. 26 March 1988. p. 1001057. Archived from the original on 24 March 2019. Retrieved 22 July 2022.
olympics.com
According to https://olympics.com/en/athletes/jacqueline-du-bief, Jacqueline du Bief, in 1952, was the first woman to do a double Lutz in international competition, but it was a controversial win, and that she later wrote in her book Thin Ice, that American Sonya Klopfer deserved the title.
"What You Need to Know About the New Rules". Coach Aimée Skating Academy - Learn to Ice Skate - PSA Excellence on Ice Awarded Program. 26 February 2007. Archived from the original on 22 October 2023. Retrieved 12 October 2023.
Cornetta, Katherine (1 October 2018). "Breaking Down an Euler". Fanzone.com. U.S. Figure Skating. Archived from the original on 29 August 2022. Retrieved 20 July 2022.
Cornetta, Katherine (1 October 2018). "Breaking Down an Euler". Fanzone.com. U.S. Figure Skating. Archived from the original on 29 August 2022. Retrieved 20 July 2022.
"What You Need to Know About the New Rules". Coach Aimée Skating Academy - Learn to Ice Skate - PSA Excellence on Ice Awarded Program. 26 February 2007. Archived from the original on 22 October 2023. Retrieved 12 October 2023.
"A Quadruple Jump on Ice". The New York Times. Associated Press. 26 March 1988. p. 1001057. Archived from the original on 24 March 2019. Retrieved 22 July 2022.