Cita APA (7a ed.)

Hammer, C. R. (1991). The Professor is missing. MacMillan.

Cita Chicago Style (17a ed.)

Hammer, Carolyn Reading. The Professor Is Missing. London [etc.]: MacMillan, 1991.

Cita MLA (9a ed.)

Hammer, Carolyn Reading. The Professor Is Missing. MacMillan, 1991.