Παραπομπή σε μορφή APA (7η εκδ.)

Knauthe, E. (1968). Experiences Concerned with Preparation and Carrying-out of Investments. The Institute of National Planning.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Knauthe, Erhart. Experiences Concerned with Preparation and Carrying-out of Investments. Cairo: The Institute of National Planning, 1968.

Παραπομπή σε μορφή MLA (9th εκδ.)

Knauthe, Erhart. Experiences Concerned with Preparation and Carrying-out of Investments. The Institute of National Planning, 1968.