Cita APA (7a ed.)

Krippendorff, K. (1980). Content analysis: An introduction to its methodology The Sage commtext series.

Cita Chicago Style (17a ed.)

Krippendorff, Klaus. "Content Analysis: An Introduction to Its Methodology." The Sage Commtext Series 1980.

Cita MLA (9a ed.)

Krippendorff, Klaus. "Content Analysis: An Introduction to Its Methodology." The Sage Commtext Series, 1980.