Cita APA (7th ed.)

Maryland. Dept. of Economic Development. (1967). Directory of Maryland manufacturers. s.n.

Cita Chicago (17th ed.)

Maryland. Dept. of Economic Development. Directory of Maryland Manufacturers. Annapolis, etc: s.n, 1967.

Cita MLA (9th ed.)

Maryland. Dept. of Economic Development. Directory of Maryland Manufacturers. s.n, 1967.