葛摩法郎1991. ISBN 0873411501. Pick, Albert. Standard Catalog of World Paper Money（英语：Standard Catalog of World Paper Money）: General Issues. Colin R. Bruce II
安哥拉埃斯库多1991. ISBN 0873411501. Pick, Albert. Standard Catalog of World Paper Money（英语：Standard Catalog of World Paper Money）: General Issues. Colin R. Bruce II
尼日利亚镑1991. ISBN 0873411501. Pick, Albert. Standard Catalog of World Paper Money（英语：Standard Catalog of World Paper Money）: General Issues. Colin R. Bruce II
不列颠哥伦比亚元、100元。 Pick, Albert. Standard Catalog of World Paper Money（英语：Standard Catalog of World Paper Money）: Specialized Issues. Colin R. Bruce
新不伦瑞克元1991. ISBN 0873411501. Pick, Albert. Standard Catalog of World Paper Money（英语：Standard Catalog of World Paper Money）: Specialized Issues. Colin R. Bruce