Gaya APA
Nicholis, R, C. (2003).
Beginning Hydroponics Soilless Gardening: Hidroponik Bercocok Tanam tanpa Tanah .
Semarang:
Dahara Prize.
Gaya MLA
Nicholis, Richard, C..
"Beginning Hydroponics Soilless Gardening: Hidroponik Bercocok Tanam tanpa Tanah".
Semarang:
Dahara Prize,
2003.
Book.