APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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