Gabriel's books included Third Cinema in the Third World: The Aesthetics of Liberation in 1982 and Third Cinema: Exploration of Nomadic Aesthetics & Narrative Communities. He co-edited Otherness and the Media: The Ethnography of the Imagined and the Imaged, which was published in 1993. He served as the editor of Emergences: Journal for the Study of Media and Composite Cultures. Additionally, Gabriel founded Tuwaf (Light), an Ethiopian journal on fine arts which is published in Amharic. He served on Tuwaf's editorial board from 1987 until 1991.
