APA (7th ed.) Citation

Johnson, L. O., & Wladaver, I. (1956). Engineering drawing problems. Prentice-Hall.

Chicago Style (17th ed.) Citation

Johnson, Lewis Olof, and Irwin Wladaver. Engineering Drawing Problems. Englewood Cliffs, N.J.: Prentice-Hall, 1956.

MLA (8th ed.) Citation

Johnson, Lewis Olof, and Irwin Wladaver. Engineering Drawing Problems. Prentice-Hall, 1956.