Cita APA (7th ed.)

Cram, I. A. (1972). Litter collection in country areas. Institution of Municipal Engineers.

Cita Chicago (17th ed.)

Cram, Ian Alexander. Litter Collection in Country Areas. London: Institution of Municipal Engineers, 1972.

Cita MLA (8th ed.)

Cram, Ian Alexander. Litter Collection in Country Areas. Institution of Municipal Engineers, 1972.