APA Style
Agapay, R, B. (c2007).
Logic : the essentials of deductive reasoning (2nd ed.).
Mandaluyong City:
National Bookstore.
MLA Style
Agapay, Ramon, B..
"Logic : the essentials of deductive reasoning".
2nd ed.
Mandaluyong City:
National Bookstore,
c2007.
Text.