Campbell, D., Draper, R., & Huffington, C. (1991). A systemic approach to consultation. Karnac Books.
芝加哥风格引文Campbell, David, Rosalind Draper, 与 Clare Huffington. A Systemic Approach to Consultation. London: Karnac Books, 1991.
MLA引文Campbell, David, et al. A Systemic Approach to Consultation. Karnac Books, 1991.
警告：这些引文格式不一定是100％准确.