BETHEL, S. M. (1994). Mengubah Keadaan. Binarupa Aksara.
Chicago Style (17th ed.) CitationBETHEL, Sheila Murray. Mengubah Keadaan. Binarupa Aksara, 1994.
MLA (8th ed.) CitationBETHEL, Sheila Murray. Mengubah Keadaan. Binarupa Aksara, 1994.
Warning: These citations may not always be 100% accurate.