Rujukan Perindustrian berat

    • Morris Teubal, Heavy and Light Industry in Economic Development The American Economic Review, Vol. 63, No. 4. (Sep., 1973), pp. 588–596.
    • Some Definitions in the Vocabulary of Geography, IV, British Association Glossary Committee, The Geographical Journal, Vol. 118, No. 3. (Sep., 1952), pp. 345–346.