Muhammad Bin Harun. (1995). Alam semula jadi. Pustaka prinsip.
Chicago Style (17th ed.) CitationMuhammad Bin Harun. Alam Semula Jadi. Kuala lumpur: Pustaka prinsip, 1995.
MLA (9th ed.) CitationMuhammad Bin Harun. Alam Semula Jadi. Pustaka prinsip, 1995.
Warning: These citations may not always be 100% accurate.