Lua APA (7ú heag.)

SIGIT, S. (1979). Analisa Break-Even - Soehardi Sigit. UGM Press.

Lua i Stíl Chicago (17ú heag.)

SIGIT, Soehardi. Analisa Break-Even - Soehardi Sigit. UGM Press, 1979.

Lua MLA (8ú heag.)

SIGIT, Soehardi. Analisa Break-Even - Soehardi Sigit. UGM Press, 1979.

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.