Cita APA (7a ed.)

Collins, M. (2005). It's OK to be sad: Activities to help children aged 4 to 9 to manage loss, grief or bereavement. Paul Chapman.

Cita Chicago Style (17a ed.)

Collins, Margaret. It's OK to Be Sad: Activities to Help Children Aged 4 to 9 to Manage Loss, Grief or Bereavement. London : Thousand Oaks, CA: Paul Chapman, 2005.

Cita MLA (9a ed.)

Collins, Margaret. It's OK to Be Sad: Activities to Help Children Aged 4 to 9 to Manage Loss, Grief or Bereavement. Paul Chapman, 2005.