Gaya APA

Puryani, . (2012). Penelitian Operasional (2012) (1e, Cet.1). Jakarta: PT. Erlangga 2012.

Gaya MLA

Puryani, . "Penelitian Operasional (2012)". 1e, Cet.1 Jakarta: PT. Erlangga 2012, 2012. .