Citazione APA

Parker, S. P. (1980). Mcgraw - Hill encyclopaedia of environmental science (2.). Mc Graw Hill Book company.

Stile di citazione Chicago

Parker, S P. Mcgraw - Hill Encyclopaedia of Environmental Science. 2. NewYork: Mc Graw Hill Book company, 1980.

Citazione MLA

Parker, S P. Mcgraw - Hill Encyclopaedia of Environmental Science. 2. Mc Graw Hill Book company, 1980.