Gaya APA
Challacombe, F, , D. (2011).
Break free from OCD. Overcoming obsessive compulsive disorder with CBT. .
London:
London Vermilion.
Gaya MLA
Challacombe, Fiona, , Dkk..
"Break free from OCD. Overcoming obsessive compulsive disorder with CBT. ".
London:
London Vermilion,
2011.
Buku.