Gaya APA

Smedes, L, B., (tr), Y, T. (1990). Teknik mengambil keputusan (Choices, making right decisions in a complex world) . : .

Gaya MLA

Smedes, Lewis, B.., (tr), Y.B., Tugiyarso. "Teknik mengambil keputusan (Choices, making right decisions in a complex world)". : , 1990. Text.