TY  - BOOK
AU  - Purchase,Helen C.
TI  - Experimental human-computer interaction: a practical guide with visual examples 
SN  - 9781107010062 (hbk.)
PY  - 2012///
CY  - Cambridge, England
PB  - Cambridge University Press
KW  - Human
KW  - Computer interaction
N1  - Includes bibliographical references and index
ER  -