Fergusson, R., Manser, M., & Pickering, D. (2000). The penguin pocket thesaurus. New York: Penguin books.
Dyfyniad Arddull ChicagoFergusson, Rosalind, Martin Manser, và David Pickering. The Penguin Pocket Thesaurus. New York: Penguin books, 2000.
Dyfyniad MLAFergusson, Rosalind, Martin Manser, và David Pickering. The Penguin Pocket Thesaurus. New York: Penguin books, 2000.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.