APA (7th ed.) Citation

Kratzmeier, H., & Horn, R. (1980). Advanced progressive matrices. Advanced progressive matrices [APM].

Chicago Style (17th ed.) Citation

Kratzmeier, Heinrich, and Ralf Horn. "Advanced Progressive Matrices." Advanced Progressive Matrices [APM] 1980.

MLA (9th ed.) Citation

Kratzmeier, Heinrich, and Ralf Horn. "Advanced Progressive Matrices." Advanced Progressive Matrices [APM], 1980.

Warning: These citations may not always be 100% accurate.