APA

Cathcart J. B., Schmidt D. L., . (1977). Middle paleozoic sedimentary phosphate in the Pensacola Mountains, Antarctica. Washington, DC: US Gov. Print. Off.

Chicago

Cathcart James B, Schmidt Dwight L, . 1977. Middle paleozoic sedimentary phosphate in the Pensacola Mountains, Antarctica. Washington, DC: US Gov. Print. Off.

Harvard

Cathcart J. B., Schmidt D. L., . (1977). Middle paleozoic sedimentary phosphate in the Pensacola Mountains, Antarctica. Washington, DC: US Gov. Print. Off.

MLA

Cathcart James B, Schmidt Dwight L, . Middle paleozoic sedimentary phosphate in the Pensacola Mountains, Antarctica. Washington, DC: US Gov. Print. Off. 1977.