Παραπομπή σε μορφή APA (7η εκδ.)

Papua and New Guinea Institute of Technology. Dept. of Mathematics. (1973). Spherical trigonometry (1973 ed.). Papua and New Guinea Institute of Technology, Mathematics Dept..

Παραπομπή σε μορφή Chicago (17η εκδ.)

Papua and New Guinea Institute of Technology. Dept. of Mathematics. Spherical Trigonometry. 1973 ed. [Lae]: Papua and New Guinea Institute of Technology, Mathematics Dept., 1973.

Παραπομπή σε μορφή MLA (9th εκδ.)

Papua and New Guinea Institute of Technology. Dept. of Mathematics. Spherical Trigonometry. 1973 ed. Papua and New Guinea Institute of Technology, Mathematics Dept., 1973.