Gaya APA

Peurifoy, R, L., Oberlender, G, D. (2014). Estimating Construction Costs sixth edition (Sixth Edition). Singapore: The MC Graw Hill Companies.

Gaya MLA

Peurifoy, Robert, L.., Oberlender, Garold, D.. "Estimating Construction Costs sixth edition". Sixth Edition Singapore: The MC Graw Hill Companies, 2014. Text.