Cita APA (7th ed.)

Purves, A. C., & Levine, D. U. (1975). Educational policy and international assessment: Implications of the IEA surveys of achivement. McGutchan.

Cita Chicago (17th ed.)

Purves, Alan C., i Daniel U. Levine. Educational Policy and International Assessment: Implications of the IEA Surveys of Achivement. Berkeley, Calif: McGutchan, 1975.

Cita MLA (9th ed.)

Purves, Alan C., i Daniel U. Levine. Educational Policy and International Assessment: Implications of the IEA Surveys of Achivement. McGutchan, 1975.