Hansen, J. C. e., & Cramer, S. H. j. e. (1971). Group guidance and counseling in the schools; selected readings. Appleton-Century-Crofts.
Lua i Stíl Chicago (17ú heag.)Hansen, James C. ed, agus Stanley H. joint ed Cramer. Group Guidance and Counseling in the Schools; Selected Readings. New York: Appleton-Century-Crofts, 1971.
Lua MLA (9ú heag.)Hansen, James C. ed, agus Stanley H. joint ed Cramer. Group Guidance and Counseling in the Schools; Selected Readings. Appleton-Century-Crofts, 1971.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.