APA (7th ed.) Citation

Magnusson, D. (1990). Personality research: Challenges for the future. European journal of personality, 4(1), 1-18.

Chicago Style (17th ed.) Citation

Magnusson, Dan. "Personality Research: Challenges for the Future." European Journal of Personality 4, no. 1 (1990): 1-18.

MLA (8th ed.) Citation

Magnusson, Dan. "Personality Research: Challenges for the Future." European Journal of Personality, vol. 4, no. 1, 1990, pp. 1-18.