Gaya APA

Scenarios : the art of strategic conversation / Kees Van der Heijden. (1997). Chichester, West Sussex: John Wiley & Sons, c.

Gaya MLA

Scenarios : the art of strategic conversation / Kees Van der Heijden. . Chichester, West Sussex: John Wiley & Sons, c, 1997. Buku Umum.