Cita APA (7th ed.)

Say, J. S. (1977). Gardening on difficult soils: Clay, sand and peat. Reed.

Cita Chicago (17th ed.)

Say, J. S. Gardening on Difficult Soils: Clay, Sand and Peat. Wellington: Reed, 1977.

Cita MLA (8th ed.)

Say, J. S. Gardening on Difficult Soils: Clay, Sand and Peat. Reed, 1977.