Cita APA (7th ed.)

Claesson, Gawelin, Jagerstrom, & Nordstrom. (1981). Course planning. s.n.].

Cita Chicago (17th ed.)

Claesson, Gawelin, Jagerstrom, i Nordstrom. Course Planning. [S.l: s.n.], 1981.

Cita MLA (9th ed.)

Claesson, et al. Course Planning. s.n.], 1981.