Heppell, M. How to Have a Brilliant Life: Put a little bit more in. Get so much more out (2.). Pearson Education UK.
Chicagoスタイル(17版)引用形式Heppell, Michael. How to Have a Brilliant Life: Put a Little Bit More in. Get so Much More Out. 2. Pearson Education UK.
MLA(8版)引用形式Heppell, Michael. How to Have a Brilliant Life: Put a Little Bit More in. Get so Much More Out. 2. Pearson Education UK.
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