APA

"Stephens Ryan K; Plew Ronald R O., . (1997). Teach Yourself Sql In 21 Days. : .

Chicago

"Stephens Ryan K; Plew Ronald R Others", . 1997. Teach Yourself Sql In 21 Days. : .

Harvard

"Stephens Ryan K; Plew Ronald R O., . (1997). Teach Yourself Sql In 21 Days. : .

MLA

"Stephens Ryan K; Plew Ronald R Others", . Teach Yourself Sql In 21 Days. : . 1997.