Cita APA (7th ed.)

RICHARD, M. (1987). Microcomputing in cobol: Structured interactive application. SRA.

Cita Chicago (17th ed.)

RICHARD, Martin. Microcomputing in Cobol: Structured Interactive Application. Chicago: SRA, 1987.

Cita MLA (9th ed.)

RICHARD, Martin. Microcomputing in Cobol: Structured Interactive Application. SRA, 1987.