Gaspar, K. M. (2004). To be poor and obscure: The spiritual sojourn of a Mindanawon. Center for Spirituality-Manila.
Chicago-viite (17. p.)Gaspar, Karl M. To Be Poor and Obscure: The Spiritual Sojourn of a Mindanawon. Quezon City: Center for Spirituality-Manila, 2004.
MLA-viite (9. p.)Gaspar, Karl M. To Be Poor and Obscure: The Spiritual Sojourn of a Mindanawon. Center for Spirituality-Manila, 2004.
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