APA (7e ed.) Bronvermelding

WAHL, S. V. Invesment appraisal and economic evaluation of mining enterprise. Gulf Publication Co.

Chicago (17e ed.) Bronvermelding

WAHL, Siesfried Von. Invesment Appraisal and Economic Evaluation of Mining Enterprise. Gulf Publication Co.

MLA (8e ed.) Bronvermelding

WAHL, Siesfried Von. Invesment Appraisal and Economic Evaluation of Mining Enterprise. Gulf Publication Co.

Let op: Deze citaties zijn niet altijd 100% accuraat.