Cita APA (7a ed.)

Levi, H. W. (1949). Two New Species of Cave Isopods from Pennsylvania.

Cita Chicago Style (17a ed.)

Levi, Herbert W. Two New Species of Cave Isopods from Pennsylvania. Philadelphia, 1949.

Cita MLA (9a ed.)

Levi, Herbert W. Two New Species of Cave Isopods from Pennsylvania. 1949.