APA aipamena

Ardales, V. B. (1992). Basic concepts and methods in research. Great Books Trading.

Chicago Style aipamena

Ardales, Venancio B. Basic Concepts and Methods in Research. Quezon City: Great Books Trading, 1992.

MLA aipamena

Ardales, Venancio B. Basic Concepts and Methods in Research. Great Books Trading, 1992.