Cita APA

Spence, E. R., & Babbit, C. (2012). RSMeans® Heavy Contruction cost data 2013 (27. edition.). Norwell, MA: RSMeans.

Citación estilo Chicago

Spence, Eugene R., y Christoher Babbit. RSMeans® Heavy Contruction Cost Data 2013. 27. edition. Norwell, MA: RSMeans, 2012.

Cita MLA

Spence, Eugene R., y Christoher Babbit. RSMeans® Heavy Contruction Cost Data 2013. 27. edition. Norwell, MA: RSMeans, 2012.