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Dots and Dashes: Interesting Stories of Progress in the Telegraph Industry, Volumes 3-20, Western Union Telegraph Company, 1927
Ruth, Julie; Otnes, Cele C.; Brunel, Frédéric F. (March 1999). “Gift Receipt and the Reformulation of Interpersonal Relationships”. Journal of Consumer Research25 (4): 385–402. doi:10.1086/209546.
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Dots and Dashes: Interesting Stories of Progress in the Telegraph Industry, Volumes 3-20, Western Union Telegraph Company, 1927
Ruth, Julie; Otnes, Cele C.; Brunel, Frédéric F. (March 1999). “Gift Receipt and the Reformulation of Interpersonal Relationships”. Journal of Consumer Research25 (4): 385–402. doi:10.1086/209546.
Dryland, Ann (October 1968). “Review”. British Journal of Educational Studies16 (3): 336–7. JSTOR3119303.