What has the author Manuel J Smith written?

Answer 1

Manuel J. Smith has written:

'Sage Nein ohne Skrupel'

'When I say no, I feel guilty' -- subject(s): Assertiveness (Psychology), Assertiveness training

'Cuando Digo No Me Siento Culpable'

'Si, Puedo Decir No'

Answer 2

Manuel J. Smith is best known for his book "When I Say No, I Feel Guilty," which explores assertiveness training and techniques to improve communication and self-confidence. Smith's work has had a significant impact on the fields of psychology and self-help.

Answer 3

Salvador Rueda Smithers has written:

'El diablo de Semana Santa' -- subject(s): History, Social conditions