Tibetan Buddhism: Books

Simultaneous and Gradual Methods of Dzogchen Practice in the Longchen Nyingtig
Sam Van Schaik
Illuminating the View of Dzogchen, the Great Perfection
John W. Pettit, His Holiness Penor Rinpoche
His Holiness the Dalai Lama, Khöntön Peljor Lhündrub, José I. Cabezón
Buddhism and the Natural Mind
Doris Wolter