GUPTA,S.S. UNDERSTANDING SCIENCE AND NATURE ECOLOGY.
Lua i Stíl Chicago (17ú heag.)GUPTA,S.S. UNDERSTANDING SCIENCE AND NATURE ECOLOGY.
Lua MLA (9ú heag.)GUPTA,S.S. UNDERSTANDING SCIENCE AND NATURE ECOLOGY.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.