APA aipamena

Lapointe, A. E., Mead, N. A., & Phillips, G. W. (1989). A world of differences: An International Assessment of Mathematics and Science. Princeton, NJ: Educational Testing Service.

Chicago Style aipamena

Lapointe, Archie E., Nancy A. Mead, and Gary W. Phillips. A World of Differences: An International Assessment of Mathematics and Science. Princeton, NJ: Educational Testing Service, 1989.

MLA aipamena

Lapointe, Archie E., Nancy A. Mead, and Gary W. Phillips. A World of Differences: An International Assessment of Mathematics and Science. Princeton, NJ: Educational Testing Service, 1989.

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