Sutra on the Contemplation of Buddha Amitayus
This English translation by J. Takakusu published originally as vol. XLIX of The Sacred Books of the East series (Oxford, 1894, public domain) has been edited for ease of reading and comprehension by modern readers. Footnotes from the original edition are dated and have thus been eliminated. A reprint of the unaltered and fully annotated translation exists in Dover paperback.