Gaya APA
Whitney, E., Rofles, S, R. (2011).
Understanding nutrition (12th. Ed.).
Belmont Ca:
Wadsworth Cangage Learning.
Gaya MLA
Whitney, Ellie., Rofles, Sharon, Rady.
"Understanding nutrition".
12th. Ed.
Belmont Ca:
Wadsworth Cangage Learning,
2011.
Text.