APA (7th ed.) Citation

Downs, R. B. (1961). Buku-buku jang merobah dunia. Pembangnan.

Chicago Style (17th ed.) Citation

Downs, Robert B. Buku-buku Jang Merobah Dunia. Pembangnan, 1961.

MLA (8th ed.) Citation

Downs, Robert B. Buku-buku Jang Merobah Dunia. Pembangnan, 1961.

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