APA (7th ed.) Citation

Levey. (1972). A room-to-room guide to the National Gallery (4th (Revised).). National Gallery (Publications Department).

Chicago Style (17th ed.) Citation

Levey. A Room-to-room Guide to the National Gallery. 4th (Revised). London: National Gallery (Publications Department), 1972.

MLA (8th ed.) Citation

Levey. A Room-to-room Guide to the National Gallery. 4th (Revised). National Gallery (Publications Department), 1972.

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