APA Citation

(2018). Gerbang Ptolemy (Cetakan 1.). Jakarta: gramedia pustaka utama.

Chicago Style Citation

Gerbang Ptolemy. Cetakan 1. Jakarta: gramedia pustaka utama, 2018.

MLA Citation

Gerbang Ptolemy. Cetakan 1. Jakarta: gramedia pustaka utama, 2018.

Warning: These citations may not always be 100% accurate.