APA (7th ed.) Citation

<FIRTH, R. d. Thiri-tjiri dan alam hidup manusia. Sumur.

Chicago Style (17th ed.) Citation

<FIRTH, Raymond dkk.>. Thiri-tjiri Dan Alam Hidup Manusia. Sumur.

MLA (8th ed.) Citation

<FIRTH, Raymond dkk.>. Thiri-tjiri Dan Alam Hidup Manusia. Sumur.

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