 Lefebvre , Marcel ( 1987 ) . Open Letter to Confused Catholics . Kansas City , Mo . : Angelus Press . ISBN 978 @-@ 0 @-@ 935952 @-@ 13 @-@ 1 . Translated from the original book : Lefèbvre , Marcel ( 1985 ) . Lettre <unk> aux <unk> <unk> ( in French ) . Paris : A. Michel . ISBN 978 @-@ 2 @-@ 226 @-@ <unk> @-@ 4 . 
