APA (7th ed.) Citation

(1961). Geological survey of Nigeria 1: 250000 series. Geological Survey.

Chicago Style (17th ed.) Citation

Geological Survey of Nigeria 1: 250000 Series. [Lagos]: Geological Survey, 1961.

MLA (9th ed.) Citation

Geological Survey of Nigeria 1: 250000 Series. Geological Survey, 1961.

Warning: These citations may not always be 100% accurate.