G. Stanley Hall and Arthur Allin: The Psychology of Tickling, Laughing and the Comic. Amer. Journ. of Psych. IX, 1, S. 1-41. 1897 / Hiram M. Stanley: Remarks on Tickling and Laughing. Amer. Journ. of Psych. IX (2), S. 235-240. 1898
Cohn, J..
1899.
G. Stanley Hall and Arthur Allin: The Psychology of Tickling, Laughing and the Comic. Amer. Journ. of Psych. IX, 1, S. 1-41. 1897 / Hiram M. Stanley: Remarks on Tickling and Laughing. Amer. Journ. of Psych. IX (2), S. 235-240. 1898.
In: Zeitschrift für Psychologie und Physiologie der Sinnesorgane 19: 80.