Claude, R. (1960). The soul of Pier-Giorgio Frassati. Spiritual Book Association.
Citación estilo ChicagoClaude, Robert. The Soul of Pier-Giorgio Frassati. New York: Spiritual Book Association, 1960.
Cita MLAClaude, Robert. The Soul of Pier-Giorgio Frassati. Spiritual Book Association, 1960.
Warning: These citations may not always be 100% accurate.