(1994). Buku tentang waktu. Encyclopaedia britannica inc..
Chicago Style (17th ed.) CitationBuku Tentang Waktu. Unknow: Encyclopaedia britannica inc., 1994.
MLA (9th ed.) CitationBuku Tentang Waktu. Encyclopaedia britannica inc., 1994.
Warning: These citations may not always be 100% accurate.