Gaya APA
HARUNA, AHMED OSUMANU. (2014).
HUMIC SUBTANCES AND UREA USE IN AGRICULTURE .
MALAYSIA:
UNIVERSITI PUTRAMALAYSIA PRESS.
Gaya Chicago
HARUNA, AHMED OSUMANU.
HUMIC SUBTANCES AND UREA USE IN AGRICULTURE.
MALAYSIA:
UNIVERSITI PUTRAMALAYSIA PRESS,
2014.
BUKU_TP.
Gaya MLA
HARUNA, AHMED OSUMANU.
HUMIC SUBTANCES AND UREA USE IN AGRICULTURE.
MALAYSIA:
UNIVERSITI PUTRAMALAYSIA PRESS,
2014.
BUKU_TP.
Gaya Turabian
HARUNA, AHMED OSUMANU.
HUMIC SUBTANCES AND UREA USE IN AGRICULTURE.
MALAYSIA:
UNIVERSITI PUTRAMALAYSIA PRESS,
2014.
BUKU_TP.