Gaya APA

Sigma, . (). 145 Questions & Answers: Start Your Own Business: Pasti Bisa Buka Usaha (Cet-1). Yogyakarta: ANDI.

Gaya MLA

Sigma, . "145 Questions & Answers: Start Your Own Business: Pasti Bisa Buka Usaha". Cet-1 Yogyakarta: ANDI, . Text.