Cita APA (7a ed.)

Robbins, M. W. (1986). The Principio Company: Iron-making in colonial Maryland, 1720-1781. Garland.

Cita Chicago Style (17a ed.)

Robbins, Michael W. The Principio Company: Iron-making in Colonial Maryland, 1720-1781. New York [etc.]: Garland, 1986.

Cita MLA (9a ed.)

Robbins, Michael W. The Principio Company: Iron-making in Colonial Maryland, 1720-1781. Garland, 1986.