APA (7e ed.) Bronvermelding

Não informado. (2018). Research Circular. Pennsylvania Department of Forests and Waters.

Chicago (17e ed.) Bronvermelding

Não informado. Research Circular. Harrisburg, Pa: Pennsylvania Department of Forests and Waters, 2018.

MLA (8e ed.) Bronvermelding

Não informado. Research Circular. Pennsylvania Department of Forests and Waters, 2018.

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