APA-ийн эшлэл(7 дахь хэвлэлт)
National Research Council (U.S.). Committee on the Use of Volunteers in Schools, ebrary, Inc, & Michael, B. (1990). Volunteers in public schools. National Academy Press.
Чикаго-гийн эшлэл (17 дахь хэвлэлт)
National Research Council (U.S.). Committee on the Use of Volunteers in Schools, Inc ebrary, ба Bernard Michael. Volunteers in Public Schools. Washington, D.C.: National Academy Press, 1990.
MLA -ийн эшлэл (9 дэх хэвлэлт)
National Research Council (U.S.). Committee on the Use of Volunteers in Schools, et al. Volunteers in Public Schools. National Academy Press, 1990.
Анхааруулга: Эдгээр ишлэлүүд үргэлж 100% үнэн зөв биш байж магадгүй.