We all know the famous nine values of Lord Buddha that we often recite when worshiping Lord Buddha. But i've heard the extended versions of those 9 values. Can someone point me a source to learn them?
The qualities of the Buddha Dhamma and Sangha is found in the Dhajagga Sutta, Velu,dvāreyya Sutta this might be a good starting point to study the qualities. Also Buddhânussati by Piya Tan has more discussion including that of the the Mahayana parallels. The 10 Characteristics discussed in the Wikipedia article Buddhahood seas to be the Mahayana point of view. A more comprehensive book written in the subject is Suwisi Maha Gunaya by Rerukane Chandawimala Thero would be a the best starting point for a for some one who knows Sinhala. A similar book perhap not this extensive in English would be Manual of Excellent Man: Uttamapurisa Dipani by Ledi Sayadaw