Wasserman, P., Allen, E., & Georgi, C. (1985). Statistics sources: A subject guide to Data on Industrial, Business, Social, Educational, Financial, and Other Topics for The United States and Selected Foreign Countries (2nd ed.). Detroit: Gale Research.
Παραπομπή Chicago StyleWasserman, Paul, Eleanor Allen, and Charlotte Georgi. Statistics Sources: A Subject Guide to Data On Industrial, Business, Social, Educational, Financial, and Other Topics for The United States and Selected Foreign Countries. 2nd ed. Detroit: Gale Research, 1985.
Παραπομπή MLAWasserman, Paul, Eleanor Allen, and Charlotte Georgi. Statistics Sources: A Subject Guide to Data On Industrial, Business, Social, Educational, Financial, and Other Topics for The United States and Selected Foreign Countries. 2nd ed. Detroit: Gale Research, 1985.