The visitations of Hertfordshire,
APA Citation
Cooke, R., Metcalfe, W. Charles., Saint-George, R., England. College of arms. (1886). The visitations of Hertfordshire. London.
MLA Citation
Cooke, Robert, -1592, Walter Charles Metcalfe, Richard Saint-George, and England. College of arms. The Visitations of Hertfordshire. London, 1886.
Warning: These citations may not always be complete (especially for serials).