S. K. Duggal. (2019). Building Materials (5th ed.). New Age International.
Chicago-čujuhus (17. p.)S. K. Duggal. Building Materials. 5th ed. New Delhi: New Age International, 2019.
MLA-čujuhus (9. p.)S. K. Duggal. Building Materials. 5th ed. New Age International, 2019.
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