Charles River Associates & United States. General Services Administration. Propertty Management and Disposal Service. (1969). An economic analysis of the cobalt industry. CRA.
Cita Chicago (17th ed.)Charles River Associates i United States. General Services Administration. Propertty Management and Disposal Service. An Economic Analysis of the Cobalt Industry. Cambridge, Mass: CRA, 1969.
Cita MLA (9th ed.)Charles River Associates i United States. General Services Administration. Propertty Management and Disposal Service. An Economic Analysis of the Cobalt Industry. CRA, 1969.
Atenció: Aquestes cites poden no estar 100% correctes.