Te' vah' che per stavolta faccio da segretaria a Ric:
he Mystery of Atlantis (1969)
Mysteries from Forgotten Worlds (1972)
Passport to French (1972, language)
The Bermuda Triangle (1974, with William L. Moore)
Dictionary of foreign terms (1975, language)
Without a Trace:New Information from the Triangle (1977)
The Philadelphia Experiment: Project Invisibility (1979, with William L. Moore)
German Step-by-Step (1979, language)
Italian Step-by-Step (1979, language)
The Roswell Incident (1980, with William L. Moore)
Doomsday 1999 A.D. (1981, with J. Manson Valentine)
Native Tongues (1983, language)
Atlantis: The Lost Continent Revealed (1984)
Passport to Japanese (1985, language)
English Step-by-Step (1985, language)
Passport to French (1986, language)
Passport to German (1986, language)
Passport to Italian (1986, language)
The Lost Ship of Noah: In Search of the Ark at Ararat (1987)
Charles Berlitz's World of Strange Phenomena (1988)
Passport to Chinese (1988, language)
The Dragon's Triangle (1989)
Spanish Step-by-Step (1990, language)
Around the World in 80 Words (1991, language)
Charles Berlitz's World of the Odd and the Awesome (1991)
Charles Berlitz's World of the Incredible but True (1992)
Passport to Spanish (1992, language)
Passport to the World (1995, language)
Learn German (1995, language)
Scegline uno.
Il mago Oronzo mi fa un baffo