I recommend that If you could have access to Petroshevsky (I hope I wrote its pronounciations correctly) works , refer to his works, because he has extensive knowledge on the primary sources which deals with mongol History in Iran.
I can only present Arabic and Persian sources ,
1)Ibn-Al-Athir, he has a very big book in Arabic language which is called "Al-kamel fi altarikh".This book is like an Encyclopedia for the middle east history from start of 11th century to year of 1231.(very famous book in Islamic history)
2)Nasavi (Mohammad ibn e Ahmad e Nasavi) who has two book, one Arabic and the other Persian,
2-A) "Sirat o soltan Jalaleddin Mankubarni" which also has a french translation in 1895.
2-P) "naftat o almasdur" (it is a persian book although its name is Arabic) which is written in 1235.
3)Juzjani (Menhajeddin othman ibn serajeddin Juzjani) has a persian book which is called " Tabaqat e Naseri" or " Tarikh e Menhaj e Seraj" in 1260. It has an English translation in 1863 in Kolkata.
4) Jovaini (Ata ol molk e Jovaini) has a history book in persian which is name is "Tarikh e Jahangosha" in 1260.(again very famous)
5)Rashideddin Fazlollah has two books in persian.
5-1)"Jame' ottavarikh" which has two volume , its first volume " Tarikh e Ghazani" is also important in turkish History.(very famous)1311.
5-2)"Mokatebat e Rashidi" or " Mashe'at e Rashidi" is a collection of 53 letters from Rashideddin (who was Ghazan minister)
6)Vesaf (Shahabeddin Abdollah ibn e fazlollah e Shirazi) has a persian book which is called "Tarikh e Vesaf" (extremly difficult and very boring text)It has been writen in 1312 to 1325.
7) Hamdollah e Mostowfi has three persian books.
7-1)"Tarikh e Gozideh" 1330.(famous) it has an English translation in 1913 London.
7-2)"Zafar Nameh" a poetic history like Shahnameh which continue Shahnameh stories from emergence of Islam to 1330.
7-3)"nozhat al Qolub" a geographical book 1340.English translation in London 1915.
There are plenty of sources , but many of them has not been printed until now.