APA (7th ed.) Citation

(1961). The waters of the Niger delta: Report on an investigation (2., rev. ed.). Netherlands Engineering Consultants.

Chicago Style (17th ed.) Citation

The Waters of the Niger Delta: Report on an Investigation. 2., rev. ed. The Hague: Netherlands Engineering Consultants, 1961.

MLA (9th ed.) Citation

The Waters of the Niger Delta: Report on an Investigation. 2., rev. ed. Netherlands Engineering Consultants, 1961.