Citazione Stile APA (7a Edizione)
Hegeler, S. Peter and caroline: A child asks about childbirth and sex (1a.ed.). Tavistock publications limited.
Citazione stile Chigago Style (17a edizione)
Hegeler, Sten. Peter and Caroline: A Child Asks About Childbirth and Sex. 1a.ed. Londres: Tavistock publications limited.
Citatione MLA (9a ed.)
Hegeler, Sten. Peter and Caroline: A Child Asks About Childbirth and Sex. 1a.ed. Tavistock publications limited.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.