Dyfyniad APA

Bowlby, J. Loss sadness and depression: Attachment and loss (reimpáginas.).

Dyfyniad Arddull Chicago

Bowlby, John. Loss Sadness and Depression: Attachment and Loss. reimpáginas.

Dyfyniad MLA

Bowlby, John. Loss Sadness and Depression: Attachment and Loss. reimpáginas.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.