DR THOMAS T. O & ARORA, N. ICSE UNDERSTANDING OUR ENVIRONMENTAL: A TEXTBOOK OF ENVIRONMENTAL STUDIES - 1 ( 2024-2025). ARYA BOOK DEPOT.
Chicago-viite (17. p.)DR THOMAS T. O & ARORA, NALINI. ICSE UNDERSTANDING OUR ENVIRONMENTAL: A TEXTBOOK OF ENVIRONMENTAL STUDIES - 1 ( 2024-2025). ARYA BOOK DEPOT.
MLA-viite (9. p.)DR THOMAS T. O & ARORA, NALINI. ICSE UNDERSTANDING OUR ENVIRONMENTAL: A TEXTBOOK OF ENVIRONMENTAL STUDIES - 1 ( 2024-2025). ARYA BOOK DEPOT.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.