APA (7th ed.) Citation

(1916). Copper sulphate wanted. [publisher not identified].

Chicago Style (17th ed.) Citation

Copper Sulphate Wanted. Washington, D.C.: [publisher not identified], 1916.

MLA (9th ed.) Citation

Copper Sulphate Wanted. [publisher not identified], 1916.

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