APA (7th ed.) Citation

Graf, K., Keil, K., & Löthe, H. (1981). Computer use in mathematics education: Present situation, intentions and problems in the Federal Republic of Germany.

Chicago Style (17th ed.) Citation

Graf, Klaus-Dieter, Karl-August Keil, and Herbert Löthe. Computer Use in Mathematics Education: Present Situation, Intentions and Problems in the Federal Republic of Germany. [London u.a.], 1981.

MLA (9th ed.) Citation

Graf, Klaus-Dieter, et al. Computer Use in Mathematics Education: Present Situation, Intentions and Problems in the Federal Republic of Germany. 1981.