Society for Psychotherapy Research. (2014). Psychotherapy Research. Guilford Publications.
Citação do estilo Chicago (17ª ed.)Society for Psychotherapy Research. Psychotherapy Research. New York: Guilford Publications, 2014.
Citação MLA (8ª ed.)Society for Psychotherapy Research. Psychotherapy Research. Guilford Publications, 2014.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.