O'Neill, P. A. (1993). Environmental chemistry (2a. ed.). Chapman.
Cita Chicago (17th ed.)O'Neill, Peter A. Environmental Chemistry. 2a. ed. Londres: Chapman, 1993.
Cita MLA (9th ed.)O'Neill, Peter A. Environmental Chemistry. 2a. ed. Chapman, 1993.
Atenció: Aquestes cites poden no estar 100% correctes.