Cita APA (7th ed.)
Bernstein, L. (2004). Water and air. Globe fearon, pearson learning group.
Cita Chicago (17th ed.)
Bernstein, Leonard. Water and Air. United State: Globe fearon, pearson learning group, 2004.
Cita MLA (9th ed.)
Bernstein, Leonard. Water and Air. Globe fearon, pearson learning group, 2004.
Atenció: Aquestes cites poden no estar 100% correctes.