APA (7e ed.) Bronvermelding

Não informado. (2022). Progress Report. Commonwealth of Pennsylvania, Department of Internal Affairs, Bureau of Topographic and Geologic Survey.

Chicago (17e ed.) Bronvermelding

Não informado. Progress Report. Harrisburg, Pa: Commonwealth of Pennsylvania, Department of Internal Affairs, Bureau of Topographic and Geologic Survey, 2022.

MLA (8e ed.) Bronvermelding

Não informado. Progress Report. Commonwealth of Pennsylvania, Department of Internal Affairs, Bureau of Topographic and Geologic Survey, 2022.

Let op: Deze citaties zijn niet altijd 100% accuraat.