APA-viite

Entelek incorporated Massachusetts. (1964). Sales forecasting. Entelek Inc, Newburyport.

Chicago-tyylinen lähdeviittaus

Entelek incorporated Massachusetts. Sales Forecasting. Massachusetts: Entelek Inc, Newburyport, 1964.

MLA-viite

Entelek incorporated Massachusetts. Sales Forecasting. Entelek Inc, Newburyport, 1964.