(美)安德鲁？哈勒姆(AndrewHallam)著. (2018). 沙发土豆投资法：轻轻松松投全球：from millionaire teacher to millionaire expat. 中信出版集团股份有限公司.
Dyfyniad Arddull Chicago(美)安德鲁？哈勒姆(AndrewHallam)著. 沙发土豆投资法：轻轻松松投全球：from Millionaire Teacher to Millionaire Expat. 中信出版集团股份有限公司, 2018.
Dyfyniad MLA(美)安德鲁？哈勒姆(AndrewHallam)著. 沙发土豆投资法：轻轻松松投全球：from Millionaire Teacher to Millionaire Expat. 中信出版集团股份有限公司, 2018.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.