Cita APA (7th ed.)
Padilla, M. J. (2005). Life science (Teacher's ed.). Pearson, Prentice hall.
Cita Chicago (17th ed.)
Padilla, Michael J. Life Science. Teacher's ed. New Jersey: Pearson, Prentice hall, 2005.
Cita MLA (9th ed.)
Padilla, Michael J. Life Science. Teacher's ed. Pearson, Prentice hall, 2005.
Atenció: Aquestes cites poden no estar 100% correctes.