Singapore Book Publishers Association. Directory of members - Singapore Book Publishers Association. Singapore Book Publishers Association.
Citação do estilo Chicago (17ª ed.)Singapore Book Publishers Association. Directory of Members - Singapore Book Publishers Association. [Singapore]: Singapore Book Publishers Association.
Citação MLA (8ª ed.)Singapore Book Publishers Association. Directory of Members - Singapore Book Publishers Association. Singapore Book Publishers Association.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.