Dyfyniad APA

Bulletin of Friends' Historical Society of Philadelphia. Friends Historical Association.

Dyfyniad Arddull Chicago

Bulletin of Friends' Historical Society of Philadelphia. Friends Historical Association.

Dyfyniad MLA

Bulletin of Friends' Historical Society of Philadelphia. Friends Historical Association.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.