Gaya APA

Hwang,Geungi. (2019). Why: rocket and spcecraft . Jakarta: Elex Media Kompuindo.

Gaya Chicago

Hwang,Geungi. Why: rocket and spcecraft. Jakarta: Elex Media Kompuindo, 2019. Text.

Gaya MLA

Hwang,Geungi. Why: rocket and spcecraft. Jakarta: Elex Media Kompuindo, 2019. Text.

Gaya Turabian

Hwang,Geungi. Why: rocket and spcecraft. Jakarta: Elex Media Kompuindo, 2019. Print.