APA (7th ed.) Citation

Callegaro, M., Lozar Manfreda, K., & Vehovar, V. (2015). Web survey methodology. SAGE.

Chicago Style (17th ed.) Citation

Callegaro, Mario, Katja Lozar Manfreda, and Vasja Vehovar. Web Survey Methodology. Los Angeles: SAGE, 2015.

MLA (9th ed.) Citation

Callegaro, Mario, et al. Web Survey Methodology. SAGE, 2015.