Cita APA (7th ed.)

De Walden, H. (1904). Some feudals lords and their seals. The De Walden Library.

Cita Chicago (17th ed.)

De Walden, Howard. Some Feudals Lords and Their Seals. Londres: The De Walden Library, 1904.

Cita MLA (9th ed.)

De Walden, Howard. Some Feudals Lords and Their Seals. The De Walden Library, 1904.