APA (7th ed.) Citation

Friend, L., & Winkler, E. W. (1961). Additional items for the Winkler Check list of Texas imprints, 1846-1860. [publisher not identified].

Chicago Style (17th ed.) Citation

Friend, Llerena, and Ernest William Winkler. Additional Items for the Winkler Check List of Texas Imprints, 1846-1860. [Austin, Texas?]: [publisher not identified], 1961.

MLA (9th ed.) Citation

Friend, Llerena, and Ernest William Winkler. Additional Items for the Winkler Check List of Texas Imprints, 1846-1860. [publisher not identified], 1961.