Provine, R. R. (2012). Curious behavior: Yawning, laughing, hiccupping, and beyond. Belknap Press of Harvard University Press.
Cita Chicago (17th ed.)Provine, Robert R. Curious Behavior: Yawning, Laughing, Hiccupping, and Beyond. Cambridge, MA: Belknap Press of Harvard University Press, 2012.
Cita MLA (9th ed.)Provine, Robert R. Curious Behavior: Yawning, Laughing, Hiccupping, and Beyond. Belknap Press of Harvard University Press, 2012.
Atenció: Aquestes cites poden no estar 100% correctes.