APA-ийн эшлэл(7 дахь хэвлэлт)

Gottner, H. R. (1968). On The Critical Path Method (C.P.M) and its Application in the G.D.R. The Institute of National Planning.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Gottner, Habil Reinhard. On The Critical Path Method (C.P.M) and Its Application in the G.D.R. Cairo: The Institute of National Planning, 1968.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Gottner, Habil Reinhard. On The Critical Path Method (C.P.M) and Its Application in the G.D.R. The Institute of National Planning, 1968.