GUPTA, V. &. K. (2016). TREE HOUSE ENVIRONMENTAL STUDIES FOR ICSE PRIMARY SCHOOL - CLASS 2. OXFORD UNIVERSITY PRESS.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGUPTA, VAISHALI & KOLEY. TREE HOUSE ENVIRONMENTAL STUDIES FOR ICSE PRIMARY SCHOOL - CLASS 2. NEW DELHI: OXFORD UNIVERSITY PRESS, 2016.
एमएलए (9वां संस्करण) प्रशस्ति पत्रGUPTA, VAISHALI & KOLEY. TREE HOUSE ENVIRONMENTAL STUDIES FOR ICSE PRIMARY SCHOOL - CLASS 2. OXFORD UNIVERSITY PRESS, 2016.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.