APA (7th ed.) Citation

Eugene J. Webb. Unobtrusive Measures (Revised Edition). SAGE.

Chicago Style (17th ed.) Citation

Eugene J. Webb. Unobtrusive Measures (Revised Edition). SAGE.

MLA (8th ed.) Citation

Eugene J. Webb. Unobtrusive Measures (Revised Edition). SAGE.

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