Complex sentence: A.Caferoglu, "Adhari (azeri)", in "Encyclopedia of Islam", (new edition), Vol.1, (Leiden, 1986), a renowned 13th century poet from Khorasan whose wrote under the pen name of Hasan-Oghlu.
Split into simpler sentences: A.Caferoglu, "Adhari (azeri)", in "Encyclopedia of Islam", (new edition), Vol.1, (Leiden, 1986). A renowned 13th century poet from Khorasan whose wrote under the pen name of Hasan-Oghlu.