http://en.wikipedia.org/wiki/Narada_Bhakti_Sutra
https://www.gitasupersite.iitk.ac.in/narada_bhakti_sutra
https://www.youtube.com/results?search_query=+Bhakti+Sutra
https://www.slideshare.net/search/slideshow?searchfrom=header&q=+Bhakti+Sutra
Place
http://radhashyamkund.blogspot.com/search/label/KusumSarovar
https://www.gitasupersite.iitk.ac.in/narada_bhakti_sutra
- http://www.krishnapath.org/eBooks/Narada-Bhakti-Sutra.pdf
- http://estudantedavedanta.net/Narada-Bhakti-Sutra-Sanskrit-text-with-English-translation.pdf
https://www.youtube.com/results?search_query=+Bhakti+Sutra
https://www.slideshare.net/search/slideshow?searchfrom=header&q=+Bhakti+Sutra
Place
http://radhashyamkund.blogspot.com/search/label/KusumSarovar