Παραπομπή APA

Perk, M. v. d. (2006). Soil and water contamination. Taylor & Francis.

Παραπομπή Chicago Style

Perk, Marcel van der. Soil and Water Contamination. London ; New York: Taylor & Francis, 2006.

Παραπομπή MLA

Perk, Marcel van der. Soil and Water Contamination. Taylor & Francis, 2006.