Gaya APA

Purba, M. (2008). Spirituality in context: Vincentian spirituality actualized by the Batak Sisters of Charity in North Sumatra. . t.t.: Discovery Books..

Gaya MLA

Purba, Mida. "Spirituality in context: Vincentian spirituality actualized by the Batak Sisters of Charity in North Sumatra.". t.t.: Discovery Books., 2008. Buku.