APA Style

Cunningham, dkk. (2019). Obstretri Williams Edisi 23 Volume 2 . Jakarta: EGC.

Chicago Style

Cunningham, dkk. Obstretri Williams Edisi 23 Volume 2. Jakarta: EGC, 2019. Text.

MLA Style

Cunningham, dkk. Obstretri Williams Edisi 23 Volume 2. Jakarta: EGC, 2019. Text.

Turabian Style

Cunningham, dkk. Obstretri Williams Edisi 23 Volume 2. Jakarta: EGC, 2019. Print.