APA (7th ed.) Citation

Gitterman, M., & Halpern, V. (1981). Qualitative analysis of physical problems. Academic Press.

Chicago Style (17th ed.) Citation

Gitterman, M., and V. Halpern. Qualitative Analysis of Physical Problems. Nueva York: Academic Press, 1981.

MLA (9th ed.) Citation

Gitterman, M., and V. Halpern. Qualitative Analysis of Physical Problems. Academic Press, 1981.