Cita APA (7th ed.)

Heyneman, S. P. (1978). Textbooks and achievement: What we know. World Bank.

Cita Chicago (17th ed.)

Heyneman, Stephen P. Textbooks and Achievement: What We Know. Washington: World Bank, 1978.

Cita MLA (9th ed.)

Heyneman, Stephen P. Textbooks and Achievement: What We Know. World Bank, 1978.