Nikhil Mohan Pattnaik, & Nikhil Mohan Pattnaik; Puspashree Pattnaik. (2004). Exploring Nature: A guidebook on activity based nature study. New Delhi: Vigyan Prasar.
استشهاد بنمط شيكاغوNikhil Mohan Pattnaik, و Nikhil Mohan Pattnaik; Puspashree Pattnaik. Exploring Nature: A Guidebook On Activity Based Nature Study. New Delhi: Vigyan Prasar, 2004.
MLA استشهادNikhil Mohan Pattnaik, و Nikhil Mohan Pattnaik; Puspashree Pattnaik. Exploring Nature: A Guidebook On Activity Based Nature Study. New Delhi: Vigyan Prasar, 2004.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.