HOWE, David. A brief introduction to social work theory. First published. Houndmills, Basingstoke ; New York : Palgrave Macmillan, 2009. vii, 224 stran. Dostupné na internetu: <https://www.gbv.de/dms/bowker/toc/9780230233126.pdf> ISBN 978-0-230-23312-6.