Research and Education Association. (1978). The biology problem solver: A complete solution guide to any textbook in its subject. Research and Education Association.
Chicago-čujuhus (17. p.)Research and Education Association. The Biology Problem Solver: A Complete Solution Guide to Any Textbook in Its Subject. New York: Research and Education Association, 1978.
MLA-čujuhus (9. p.)Research and Education Association. The Biology Problem Solver: A Complete Solution Guide to Any Textbook in Its Subject. Research and Education Association, 1978.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.