Primary Source:
Audio message from Jabhat al-Nuṣrah’s Abū Muḥammad al-Jawlānī: “About the Fields of al-Shām”
Ahmad Muaz al-Khatib (post 1 and post 2)
Secondary Sources:
In Syria, the Jihadist Campaign for Hearts and Minds | TIME.com
Al Nusrah Front leader renews allegiance to al Qaeda, rejects new name – The Long War Journal
Nusra Front members in Syria have never masked al Qaida ties | McClatchy
Jabhat al-Nusra Declares Allegiance to Al-Qaeda – Al-Monitor: the Pulse of the Middle East
Syrian Jihadism 