APA (7e ed.) Bronvermelding

Enders, K., & Siebert, H. (1984). The Resource sector in an open economy. Springer-Verlag.

Chicago (17e ed.) Bronvermelding

Enders, Klaus-Stefan, en Horst Siebert. The Resource Sector in an Open Economy. Berlin: Springer-Verlag, 1984.

MLA (9e ed.) Bronvermelding

Enders, Klaus-Stefan, en Horst Siebert. The Resource Sector in an Open Economy. Springer-Verlag, 1984.