Mahoney DRJ. Hadley, N. H. (1984). <i>Fingernail Biting, Theory, Research and Treatment.</i>. Can J Couns Psychother [Internet]. 2011 May 9 [cited 2025 Dec. 31];21(4). Available from: https://cdm.ucalgary.ca/index.php/rcc/article/view/59681