Some of his notable works include:
- L'Espagne et l'Amérique latine (1930)
- Histoire du Mexique (1931)
- La Guerre civile d'Espagne (1936)
- La République espagnole (1938)
- L'Espagne de Franco (1948)
- La Transition démocratique en Espagne (1978)
- Histoire de l'Amérique latine (1979)
Labaste's work is characterized by its rigorous scholarship and its insights into the political and social dynamics of Spain and Latin America. He was a pioneer in the field of Latin American studies and his work has had a profound impact on the understanding of the region.