Roscher, W. H. Ausfuhrliches Lexikon der Griechischen und Romischen Mythologie . This six-volume set is the most thorough mythological dictionary ever compiled. It is arranged alphabetically and it contains numerous references and quotations from Greek texts. Crowell's Handbook of Classical Mythology . A mythological dictionary containing most myths with their various versions.
Most entries cite the original sources used.
Some entries have genealogical tables but there is no section with a collection of genealogical tables. There is a key to the pronunciation of the names but there is no index. Zimmermann, J. E. Dictionary of Classical Mythology . A small dictionary with very short entries. Its only merit is the fact that it's handy and allows the user to find brief basic entries very quickly.