ebrary, Inc, Gardiner, F., & Garmson, E. (2010). Plastics and the environment. iSmithers.
Cita Chicago (17th ed.)ebrary, Inc, Frances Gardiner, i Eleanor Garmson. Plastics and the Environment. Shawbury, U.K.: iSmithers, 2010.
Cita MLA (9th ed.)ebrary, Inc, et al. Plastics and the Environment. iSmithers, 2010.
Atenció: Aquestes cites poden no estar 100% correctes.