There are different genres of Early Buddhist Texts, including prose "suttas" (Skt: "sūtra", discourses), disciplinary works ("Vinaya"), various forms of verse compositions (such as "gāthā" and "udāna"), mixed prose and verse works ("geya"), and also lists ("matika") of monastic rules or doctrinal topics. A large portion of Early Buddhist literature is part of the "sutta" or "sutra" genre. The "Sūtras" (Sanskrit; Pali "Sutta") are mostly discourses attributed to the Buddha or one of his close disciples. They are considered to be "buddhavacana" by all schools. The Buddha's discourses were perhaps originally organised according to the style in which they were delivered. They were later organized into collections called "Nikāyas" ('volumes') or "Āgamas" ('scriptures'), which were further collected into the "Sūtra Piṭaka" ("Basket of Discourses") of the canons of the early schools.