Addington, S., Watson, T., & Workman, B. (1806). Questions relating to geography: With particular reference to Workman's system : to which is appended, promiscous questions on the study of geography in general. Philadelphia: Printed and sold by John McCulloch.

Addington, Stephen., Thomas Watson, and Benjamin Workman. Questions Relating to Geography: With Particular Reference to Workman's System : To Which Is Appended, Promiscous Questions On the Study of Geography in General. Philadelphia: Printed and sold by John McCulloch, 1806.

Addington, Stephen., Thomas Watson, and Benjamin Workman. Questions Relating to Geography: With Particular Reference to Workman's System : To Which Is Appended, Promiscous Questions On the Study of Geography in General. Philadelphia: Printed and sold by John McCulloch, 1806.