Helander, M. (1988). Handbook of human-computer interaction. North-Holland ; Sole distributors for the U.S.A. and Canada, Elsevier Science Publ. Co..

Helander, Martin. Handbook of Human-computer Interaction. Amsterdam ; New York : New York, N.Y., U.S.A.: North-Holland ; Sole distributors for the U.S.A. and Canada, Elsevier Science Publ. Co., 1988.

Helander, Martin. Handbook of Human-computer Interaction. North-Holland ; Sole distributors for the U.S.A. and Canada, Elsevier Science Publ. Co., 1988.