Morgan, S. (1993). Menggunakan tenaga. Evans Brothers Limited.
Chicago Style (17th ed.) CitationMorgan, Sally. Menggunakan Tenaga. UK: Evans Brothers Limited, 1993.
MLA (9th ed.) CitationMorgan, Sally. Menggunakan Tenaga. Evans Brothers Limited, 1993.
Warning: These citations may not always be 100% accurate.