Cita APA (7a ed.)

Krippendorff, K. (2013). Content analysis: An introduction to its methodology (3rd ed.). SAGE.

Cita Chicago Style (17a ed.)

Krippendorff, Klaus. Content Analysis: An Introduction to Its Methodology. 3rd ed. Thousand Oaks, CA: SAGE, 2013.

Cita MLA (9a ed.)

Krippendorff, Klaus. Content Analysis: An Introduction to Its Methodology. 3rd ed. SAGE, 2013.