Lafferty, R. A. (1975). Nine hundred grandmothers. Dennis Dobson.
Cita Chicago (17th ed.)Lafferty, R. A. Nine Hundred Grandmothers. London: Dennis Dobson, 1975.
Cita MLA (8th ed.)Lafferty, R. A. Nine Hundred Grandmothers. Dennis Dobson, 1975.
Atenció: Aquestes cites poden no estar 100% correctes.