Cita APA (7th ed.)

MORGAN, R. (1979). Soil erosion: Topics in applied geography. Longman.

Cita Chicago (17th ed.)

MORGAN, R.P.C. Soil Erosion: Topics in Applied Geography. London: Longman, 1979.

Cita MLA (9th ed.)

MORGAN, R.P.C. Soil Erosion: Topics in Applied Geography. Longman, 1979.