Complex sentence: Thomas 2004, p.3 To deal with these feelings, he began working with a social worker in Cambridge, who recommended visiting a retreat for Vietnam veterans run by Thich Nhat Hanh, a Vietnamese Buddhist monk.
Split into simpler sentences: Thomas 2004, p.3 To deal with these feelings, he began working closely with a social worker in Cambridge. The social worker recommended visiting a retreat for Vietnam veterans, which later turned out to be run by Thich Nhat Hanh, a Vietnamese Buddhist monk.