Cita APA (7a ed.)

Wallgren, A. (1996). Graphing statistics & data: Creating better charts. Sage.

Cita Chicago Style (17a ed.)

Wallgren, Anders. Graphing Statistics & Data: Creating Better Charts. Thousand Oaks, California [etc.]: Sage, 1996.

Cita MLA (9a ed.)

Wallgren, Anders. Graphing Statistics & Data: Creating Better Charts. Sage, 1996.