APA (7th ed.) Citation

Johnson, W. R. (1841). Report of an examination of the Bear Valley coal district: In Dauphin County, Pennsylvania. [s.n.].

Chicago Style (17th ed.) Citation

Johnson, Walter Rogers. Report of an Examination of the Bear Valley Coal District: In Dauphin County, Pennsylvania. S.l: [s.n.], 1841.

MLA (9th ed.) Citation

Johnson, Walter Rogers. Report of an Examination of the Bear Valley Coal District: In Dauphin County, Pennsylvania. [s.n.], 1841.