APA (7th ed.) Citation

Black, J. E., Cook, A. D., & Lawson, S. R. (1928). German cotton yarn trade in 1927. [publisher not identified].

Chicago Style (17th ed.) Citation

Black, J. E., A. Douglas Cook, and Stanley R. Lawson. German Cotton Yarn Trade in 1927. Washington, D.C.: [publisher not identified], 1928.

MLA (9th ed.) Citation

Black, J. E., et al. German Cotton Yarn Trade in 1927. [publisher not identified], 1928.