Hengirmen, Mehmet. Yazım kılavuzu : Noktalama işaretleri / by Mehmet Hengirmen. - 2nd ed. - Ankara : Engin, 1999. - 511 p ; 20 cm. Turkish. ISBN: 9753200226 Subjects--Topical Terms: Language, Turkish--Orthography and spelling.Orthography and spelling, Turkish.