Bonin, C. (2021). Singing makes you happy: 10-minute workout for a beautiful voice. Self-Published.
芝加哥风格引文Bonin, Christin. Singing Makes You Happy: 10-minute Workout for a Beautiful Voice. [Place of publication not identified]: Self-Published, 2021.
MLA引文Bonin, Christin. Singing Makes You Happy: 10-minute Workout for a Beautiful Voice. Self-Published, 2021.
警告：这些引文格式不一定是100％准确.