Cita APA (7th ed.)

Balls, R. C. (2014). Horticultural engineering technology: Field machinery. NIPA.

Cita Chicago (17th ed.)

Balls, R. C. Horticultural Engineering Technology: Field Machinery. New Delhi: NIPA, 2014.

Cita MLA (9th ed.)

Balls, R. C. Horticultural Engineering Technology: Field Machinery. NIPA, 2014.