(1952). Graphic methods for solving problems.
Tohutoru Kātū Chicago (17th ed.)Graphic Methods for Solving Problems. 1952.
Tohutoro MLA (9th ed.)Graphic Methods for Solving Problems. 1952.
Kia tūpato: Kāore pea ēnei kupu hautoa i te ōrite pū 100%.
Tohutoro APA (7th ed.)