The Larger Sukhavati-Vyuha - The Larger Sukhavati-Vyuha. Description of Sukhavati, The Land of Bliss. - http://www.sacred-texts.com/bud/sbe49/
The Amitabha Sutra - Translated into Chinese by Tripitaka Master Kumarajiva Translated from Chinese into English by J.C. Cleary - http://www.buddhistinformation.com/ida_b_wells_memorial_sutra_library/amidasutra.htm
Amitabha Sadhana - Instructions on the Amitabha Sadhana. - http://www.purifymind.com/AmitabhaSadhana.htm
The Collected Works of Shinran - Online publication of the translated complete works of Shinran Shonin (1173-1262), founder of Jodo-Shinshu or True Pure Land School of Buddhism. - http://www.shinranworks.com
The Sutra of Contemplation on 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. - http://web.mit.edu/stclair/www/meditationsutra.html
Sukhavativyuha Sutra - The Sutra on the Buddha of Eternal Life. Translated from the Sanskrit by F. Max Mueller edited by Richard St. Clair. - http://web.mit.edu/stclair/www/larger.html
Smaller Sukhavativyuha Sutra - Smaller Sukhavativyuha Sutra. Translated from the Chinese Version of Kumarajiva by Nishu Utsuki. - http://web.mit.edu/stclair/www/smaller.html