Useful books that collectively cover the field, are cited below. Chapter titles are included if appropriate but do not infer too much from the level of detail because one author's chapter may be another's subsection. The citations are classified as follows:

• Pre-1970 Classics. Early volumes that set the stage.
• Introductory (General). Suitable for the undergraduate classroom.
• Advanced (General). Best for practitioners and graduate students.
• Analytical. For the supporting mathematics.
• Linear Equation Problems. Ax=b
• Linear Fitting Problems. ||Ax - b||₂.
• Eigenvalue Problems. Ax = lambda x.
• High Performance. Parallel/vector issues.
• Edited Volumes. Useful, thematic collections.