TY  - BOOK
AU  - Guilas, Alfie C.
TI  - POS system for work express
AV  - HF 5530 .G943 2015
PY  - 2015///
CY  - Las Piñas, Philippines
PB  - SISC
KW  - Point-of-sale systems
N1  - Includes bibliographical references and appendices
ER  -