Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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.

Cita MLA (9a ed.)

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