PARKER, S. P. (1988). Mcgraw-hill Encyclopedia Of Environmental Science & Engineering Editors In Chief, Sybil P. Parker, Robert A. Corbitt. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)PARKER, Sybil P. Mcgraw-hill Encyclopedia Of Environmental Science & Engineering Editors In Chief, Sybil P. Parker, Robert A. Corbitt. McGraw-Hill, 1988.
Lua MLA (8ú heag.)PARKER, Sybil P. Mcgraw-hill Encyclopedia Of Environmental Science & Engineering Editors In Chief, Sybil P. Parker, Robert A. Corbitt. McGraw-Hill, 1988.
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