APA (7th ed.) Citation

Heron, A. M. Directory of the economic minerals of Pakistan. Geological Survey of Pakistan.

Chicago Style (17th ed.) Citation

Heron, Alexander Macmillan. Directory of the Economic Minerals of Pakistan. Karachi: Geological Survey of Pakistan.

MLA (8th ed.) Citation

Heron, Alexander Macmillan. Directory of the Economic Minerals of Pakistan. Geological Survey of Pakistan.

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