Gaya APA
Balls, R. (1986).
Horticultural engineering technology : fixed equipment and building / R.C. Balls .
Houndmills, Basingstoke:
McMillan.
Gaya MLA
Balls, R.C..
"Horticultural engineering technology : fixed equipment and building / R.C. Balls".
Houndmills, Basingstoke:
McMillan,
1986.
Textbook.