Penn, W., & Barclay, J. (1835). William Penn's journal of his travels in Holland and Germany,: In 1677, in the service of the Gospel ; containing several letters and addresses written while there to persons of eminence and quality (4th ed.). London: Darton and Harvey.

Penn, William, and John Barclay. William Penn's Journal of His Travels in Holland and Germany,: In 1677, in the Service of the Gospel ; Containing Several Letters and Addresses Written While There to Persons of Eminence and Quality. 4th ed. London: Darton and Harvey, 1835.

Penn, William, and John Barclay. William Penn's Journal of His Travels in Holland and Germany,: In 1677, in the Service of the Gospel ; Containing Several Letters and Addresses Written While There to Persons of Eminence and Quality. 4th ed. London: Darton and Harvey, 1835.