APA引文

Singapore. Dept. of Civil Aviation. Civil aviation. Govt. Print. Off.].

Chicago Style (17th ed.) Citation

Singapore. Dept. of Civil Aviation. Civil Aviation. [Singapore: Govt. Print. Off.].

MLA引文

Singapore. Dept. of Civil Aviation. Civil Aviation. Govt. Print. Off.].

警告：这些引文格式不一定是100％准确.