Dyfyniad APA

ADAMS GERALD R. (1985). UNDERSTANDING RESEARCH METHODS. LONGMAN GROUP.

Dyfyniad Arddull Chicago

ADAMS GERALD R. UNDERSTANDING RESEARCH METHODS. NEW YORK LONDON: LONGMAN GROUP, 1985.

Dyfyniad MLA

ADAMS GERALD R. UNDERSTANDING RESEARCH METHODS. LONGMAN GROUP, 1985.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.