APA Style
Osuala, E, C. (2001).
Introduction to research methodology / E.C. Osuala. (3RD EDT.).
Onitsha, Nigeria:
Africana-FEP Publishers.
MLA Style
Osuala, E., C..
"Introduction to research methodology / E.C. Osuala.".
3RD EDT.
Onitsha, Nigeria:
Africana-FEP Publishers,
2001.
Text.