TY  - GEN
AU  - Purchase, Helen C.
TI  - Experimental human - computer interaction : a practical guide with visual examples
SN  - 9780521279543 (pbk)
U1  - 004.019 PUR/Exp 
PY  - 2012///
CY  - Cambridge
PB  - Cambridge University Press
KW  - Human - computer interaction
N1  - Includes bibliography, references and index
ER  -