APA (7th ed.) Citation

Trueswell, R. L. (1969). Some Behavioral Patterns of Library Users: The 80/20 Rule.

Chicago Style (17th ed.) Citation

Trueswell, Richard L. Some Behavioral Patterns of Library Users: The 80/20 Rule. 1969.

MLA (9th ed.) Citation

Trueswell, Richard L. Some Behavioral Patterns of Library Users: The 80/20 Rule. 1969.

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