Home › Authors › John J. Willingham 👤 John J. Willingham 4 books Books by John J. Willingham Auditing concepts and methods 1987 Instructor's manual to accompa Instructor's manual to accompany 'Auditing concepts and methods', second edition and 'Perspectives in auditing 1975 Financial accounting; an input/output approach 1970 Auditing methodology Auditing methodology 1969