Cita APA (7th ed.)
Hoefnagels, M. (2009). Biology: Concepts & investigations. McGraw-Hill.
Cita Chicago (17th ed.)
Hoefnagels, Mariëlle. Biology: Concepts & Investigations. Boston: McGraw-Hill, 2009.
Cita MLA (9th ed.)
Hoefnagels, Mariëlle. Biology: Concepts & Investigations. McGraw-Hill, 2009.
Atenció: Aquestes cites poden no estar 100% correctes.