APA (7th ed.) Citation

Kuhn, D. Formal operations from a twenty-first century perspective. 50th anniversary special issue, 2008, p. 48-55, 48.

Chicago Style (17th ed.) Citation

Kuhn, Deanna. "Formal Operations from a Twenty-first Century Perspective." 50th Anniversary Special Issue, 2008, P. 48-55 : 48.

MLA (9th ed.) Citation

Kuhn, Deanna. "Formal Operations from a Twenty-first Century Perspective." 50th Anniversary Special Issue, 2008, P. 48-55, , p. 48.

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