TY  - BOOK
AU  - Lial, Margaret L.
AU  - Hornsby, John
TI  - Trigonometry
SN  - 978-981-0697-32-7
AV  - 516.24 L61t 
PY  - 2009///
CY  - Boston
PB  - Addison Wesley
N1  - Includes bibliographic references and index
ER  -