APA (7th ed.) Citation

Harper, C. Series of 7 poster-designs. See also BG D15/491-497.

Chicago Style (17th ed.) Citation

Harper, Clifford. Series of 7 Poster-designs. See Also BG D15/491-497.

MLA (8th ed.) Citation

Harper, Clifford. Series of 7 Poster-designs. See Also BG D15/491-497.

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