Gaya APA
Burrows, R.
(1988).
Guidelines for mystical prayer, impr. ed. Cet.pertama 1976.
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London:
Sheed and Ward.
Gaya MLA
Burrows, Ruth.
"Guidelines for mystical prayer, impr. ed. Cet.pertama 1976. ".
London:
Sheed and Ward,
1988.
Buku.