APA (7th ed.) Citation

Ragusa, O. (1975). Essential Italian grammar / (by) Olga Ragusa. Teach Yourself Books.

Chicago Style (17th ed.) Citation

Ragusa, Olga. Essential Italian Grammar / (by) Olga Ragusa. London: Teach Yourself Books, 1975.

MLA (9th ed.) Citation

Ragusa, Olga. Essential Italian Grammar / (by) Olga Ragusa. Teach Yourself Books, 1975.

Warning: These citations may not always be 100% accurate.