Spellman, F. R. (1999). Environmental science and technology: Concepts and applications. Rockville, Md: Government Institutes.
Chicago-стиль цитированияSpellman, Frank R. Environmental Science and Technology: Concepts and Applications. Rockville, Md: Government Institutes, 1999.
MLA-цитированиеSpellman, Frank R. Environmental Science and Technology: Concepts and Applications. Rockville, Md: Government Institutes, 1999.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.