Gaya APA

Swanson, C, P., Steinbeck, J. (NULL). In dubious battle . [s.l]:: [s.l]: [s.n]; [s.a].

Gaya MLA

Swanson, Carl, P.., Steinbeck, John. "In dubious battle". [s.l]:: [s.l]: [s.n]; [s.a], NULL. Text.