Lua APA (7ú heag.)

Crisostomo, I. T. (2002). The president as salesperson and manager. Manila Bulletin.

Lua i Stíl Chicago (17ú heag.)

Crisostomo, Isabelo T. "The President as Salesperson and Manager." Manila Bulletin 2002.

Lua MLA (9ú heag.)

Crisostomo, Isabelo T. "The President as Salesperson and Manager." Manila Bulletin, 2002.

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