Gaya APA

Beam, G, D., Buechner, J, C. (1968). Readings on American Government: Concepts in Context (1). California, USA: .

Gaya MLA

Beam, George, D.., Buechner, John, C.. "Readings on American Government: Concepts in Context". 1 California, USA: , 1968. Koleksi Elektronik.