Citazione Stile APA (7a Edizione)

(1997). Main types of geological maps purpose, use and preparation. Oxford.

Citazione stile Chigago Style (17a edizione)

Main Types of Geological Maps Purpose, Use and Preparation. New Delhi: Oxford, 1997.

Citatione MLA (9a ed.)

Main Types of Geological Maps Purpose, Use and Preparation. Oxford, 1997.