APA Style
Calingasan, R, M.
(2013).
Trigonometry: A worktext
.
Mandaluyong City:
Anvil Publishing, Inc, Philippines.
MLA Style
Calingasan, Recto, M..
"Trigonometry: A worktext".
Mandaluyong City:
Anvil Publishing, Inc, Philippines,
2013.
Text.