Ravden, S., Johson, G. Evaluating Usability of Human- Computer Interfaces. New York etc.: Ellis Horwood Limited, 1989 126 p. il. 0-7458-0614-7.
Ravden, S., Johson, G. Evaluating Usability of Human- Computer Interfaces. New York etc.: Ellis Horwood Limited, 1989 126 p. il. 0-7458-0614-7.
Ravden, S., Johson, G. (1989) Evaluating Usability of Human- Computer Interfaces, New York etc.: Ellis Horwood Limited 126 p. il. 0-7458-0614-7.
Ravden, S., & Johson, G. (1989). Evaluating Usability of Human- Computer Interfaces. A practical method. New York etc.: Ellis Horwood Limited, 126 p. il.
Ravden S, Johson G. Evaluating Usability of Human- Computer Interfaces: A practical method. New York etc.: Ellis Horwood Limited; 1989. p. 126 p. il. ISBN: 0-7458-0614-7.