Gaya APA

Dua, . (2014). Dua Puluh 20 Minute Manager Creating Business Plans (Cet. 1-Ed. 1). Amerika: Harvard Business Review Press.

Gaya MLA

Dua, . "Dua Puluh 20 Minute Manager Creating Business Plans". Cet. 1-Ed. 1 Amerika: Harvard Business Review Press, 2014. Buku Teks.