Cita APA (7th ed.)

Wiersma, W. (1969). Research methods in education: An introduction. Lippincott.

Cita Chicago (17th ed.)

Wiersma, William. Research Methods in Education: An Introduction. Philadelphia: Lippincott, 1969.

Cita MLA (8th ed.)

Wiersma, William. Research Methods in Education: An Introduction. Lippincott, 1969.