“A separate treatise on a single subject or class of subjects, or on one person, usually detailed in treatment but not extensive in scope and often containing bibliographies. Frequently published in series. In cataloguing, any publication which is not a Serial”. Harrods Librarian Glossary and Reference Book.
- Study in the history of ideas, by E. Baldwin Smith (Monographs in arts & archaeology series, 25), Princeton, N.J. Princeton University Press, 1971.