Gaya APA

Havers, A, J., JR., S, W, F. (1971). Handbook of Heavy Construction (Second edition). San Francisco: Mc Graw Hill.

Gaya MLA

Havers, A, John.., JR., Stubbs, W, Frank,. "Handbook of Heavy Construction". Second edition San Francisco: Mc Graw Hill, 1971. Text.