H.O. Mounce & D.Z. Phillips 
Moral Practices Vol 6 [PDF ebook] 

This is Volume VI of nine in a collection of studies in Ethics and the Philosophy of Religion. Originally published in 1970, this volume looks at moral practices and the question which has puzzled philosophers: whether any value judgement can follow logically from the facts, can follow in such a way that someone who assents to the facts is bound in logic to assent also to the value judgement based upon them.