Hausa Grammar Online Free Language
Hausa Grammatical Sketch.
A grammar of the Hausa language by Migeod, Frederick William Hugh, b. 1872.
This online grammar provides basic information about the structure of the Hausa language explained in a relatively non-technical way.
Hausa language Grammar
Hausa notes by Miller, Walter Richard Samuel.
Grammar of the Hausa language by Schön, James Frederick, 1803-1889.
Hausa Grammar with Exercises, Readings, and Vocabularies: With Exercises ... by Charles Henry Robinson, John Alder Burdon