Dyfyniad APA

Robbins, N. B. (2005). Creating more effective graphs. John Wiley.

Dyfyniad Arddull Chicago

Robbins, Naomi B. Creating More Effective Graphs. London: John Wiley, 2005.

Dyfyniad MLA

Robbins, Naomi B. Creating More Effective Graphs. John Wiley, 2005.

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