APA

Parfomak P. W., Library of Congress, . (2018). NERC standards for bulk power physical security: is the grid more secure?. [Washington, D.C.]: Congressional Research Service.

Chicago

Parfomak Paul W, Library of Congress, . 2018. NERC standards for bulk power physical security: is the grid more secure?. [Washington, D.C.]: Congressional Research Service.

Harvard

Parfomak P. W., Library of Congress, . (2018). NERC standards for bulk power physical security: is the grid more secure?. [Washington, D.C.]: Congressional Research Service.

MLA

Parfomak Paul W, Library of Congress, . NERC standards for bulk power physical security: is the grid more secure?. [Washington, D.C.]: Congressional Research Service. 2018.