SINGH, S. P. (1995). SCIENTIFIC HORTICULTURE: V-4.
Chicago Style aipamenaSINGH, S P. SCIENTIFIC HORTICULTURE: V-4. JODHPUR, SCIENTIFIC PUBLISHERS, 1995.
MLA aipamenaSINGH, S P. SCIENTIFIC HORTICULTURE: V-4. 1995.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.