Cita APA (7th ed.)

Singapore. National Statistical Commission. (1973). Singapore standard occupational classification and dictionary. Singapore National Printers.

Cita Chicago (17th ed.)

Singapore. National Statistical Commission. Singapore Standard Occupational Classification and Dictionary. Singapore: Singapore National Printers, 1973.

Cita MLA (9th ed.)

Singapore. National Statistical Commission. Singapore Standard Occupational Classification and Dictionary. Singapore National Printers, 1973.