Gaya APA
Wiersma, William. (1986).
Research methods in education : an introduction (4th ed).
Boston:
Allyn and Boston.
Gaya Chicago
Wiersma, William.
Research methods in education : an introduction.
4th ed
Boston:
Allyn and Boston,
1986.
Text.
Gaya MLA
Wiersma, William.
Research methods in education : an introduction.
4th ed
Boston:
Allyn and Boston,
1986.
Text.
Gaya Turabian
Wiersma, William.
Research methods in education : an introduction.
4th ed
Boston:
Allyn and Boston,
1986.
Print.