DOUGHERTY, ELEANOR. "A semiology of interaction: Posing the problem" Semiotica, 50.3-4 (2009): 213-220. Retrieved 24 May. 2013, from doi:10.1515/semi.1984.50.3-4.213

DOUGHERTY, E. (2009). A semiology of interaction: Posing the problem. Semiotica, 50(3-4), pp. 191-378. Retrieved 24 May. 2013, from doi:10.1515/semi.1984.50.3-4.213

DOUGHERTY, ELEANOR. 2009. A semiology of interaction: Posing the problem. Semiotica. 50(3-4): 191-378. Retrieved 24 May. 2013, from doi:10.1515/semi.1984.50.3-4.213