Παραπομπή APA

Dickey, P. A., & Heeren, L. (1965). Oil and gas field property line maps of the Titusville Quadrangle, Pennsylvania. Pennsylvania: Commonwealth of Pennsylvania.

Παραπομπή Chicago Style

Dickey, Parke A., and Lillian Heeren. Oil and Gas Field Property Line Maps of the Titusville Quadrangle, Pennsylvania. Pennsylvania: Commonwealth of Pennsylvania, 1965.

Παραπομπή MLA

Dickey, Parke A., and Lillian Heeren. Oil and Gas Field Property Line Maps of the Titusville Quadrangle, Pennsylvania. Pennsylvania: Commonwealth of Pennsylvania, 1965.

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