GUPTA,S.S. UNDERSTANDING SCIENCE AND NATURE ECOLOGY.
Chicago Style (17th ed.) CitationGUPTA,S.S. UNDERSTANDING SCIENCE AND NATURE ECOLOGY.
MLA (9th ed.) CitationGUPTA,S.S. UNDERSTANDING SCIENCE AND NATURE ECOLOGY.
Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.