APA (7th ed.) Citation

(1975). Poster in a series of 4(?), D12/820-823.

Chicago Style (17th ed.) Citation

Poster in a Series of 4(?), D12/820-823. 1975.

MLA (8th ed.) Citation

Poster in a Series of 4(?), D12/820-823. 1975.

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