APA (7th ed.) Citation

Orton, A. (1980). A cross-sectional study of the understanding of elementary calculus in adolescents and young adults.

Chicago Style (17th ed.) Citation

Orton, Anthony. A Cross-sectional Study of the Understanding of Elementary Calculus in Adolescents and Young Adults. 1980.

MLA (8th ed.) Citation

Orton, Anthony. A Cross-sectional Study of the Understanding of Elementary Calculus in Adolescents and Young Adults. 1980.

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