TY  - BOOK
AU  - Hornsby,John
AU  - Lial,Margaret L.
AU  - Rockswold,Gary K.
TI  - A graphical approach to precalculus with limits: a unit circle approach 
SN  - 9780321900821 (hardback : student edition)
U1  - 512.1 
PY  - 2015///]
CY  - Boston
PB  - Pearson
KW  - Functions
N1  - Includes index
ER  -