Upanishads, Various Advaita Ashram Publications
From The Upanishads, Ananda Wood
The Principle Upanishads, S Radhakrishnan*
Bhagavad Gita, Yogananda Paramahansa*
Yoga Vasishta, KN Subramaniam*
Tripura Rahasya, Swami Sri R Saraswati*
Vivekachoodamani of Shankaracharya, Various Publications
Yoga Sutras of Patanjali, Various Publications
Brahma Sutras, Swami Shivananda*
In Woods of God Realisation, Swami Rama Tirtha
The Essential Sri Anandamayi Ma, A Lipski
Meditations/Yogas, Gods and Religions, Ram Swarup
The Prajna Sutras, Subhash Kak
Titles in bold are suitable for general reading.
* Translation/Commentary of the Author