APA-ийн эшлэл(7 дахь хэвлэлт)

Schmid, T., & Testa, C. (1969). Systems building: An international survey of methods. Frederick A. Praeger.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Schmid, Thomas, ба Carlo Testa. Systems Building: An International Survey of Methods. Nueva York: Frederick A. Praeger, 1969.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Schmid, Thomas, ба Carlo Testa. Systems Building: An International Survey of Methods. Frederick A. Praeger, 1969.