Gaya APA
Al Mazrou, Yagob. (1990).
Levels, trends .
Riyadh:
UNICEF.
Gaya Chicago
Al Mazrou, Yagob.
Levels, trends.
Riyadh:
UNICEF,
1990.
.
Gaya MLA
Al Mazrou, Yagob.
Levels, trends.
Riyadh:
UNICEF,
1990.
.
Gaya Turabian
Al Mazrou, Yagob.
Levels, trends.
Riyadh:
UNICEF,
1990.
.