APA (7th ed.) Citation

Oliver, T. L. D.D.R. collectors reference guides 1949-1990.

Chicago Style (17th ed.) Citation

Oliver, Tony L. D.D.R. Collectors Reference Guides 1949-1990.

MLA (8th ed.) Citation

Oliver, Tony L. D.D.R. Collectors Reference Guides 1949-1990.

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