Gaya APA
Chang, W. (2013).
"R Graphics Cookbook: Practical Recipes for Visualizing Data| (Ed. 1).
California:
O'Reilly Media.
Gaya MLA
Chang, Winston.
""R Graphics Cookbook: Practical Recipes for Visualizing Data|".
Ed. 1
California:
O'Reilly Media,
2013.
book.