APA
National Association of Accountants (New York USA), National Association of Accountants (New York USA), . (1971). Accounting for research and development costs. New York: NAA USA.
Chicago
National Association of Accountants (New York USA), National Association of Accountants (New York USA), . 1971. Accounting for research and development costs. New York: NAA USA.
Harvard
National Association of Accountants (New York USA), National Association of Accountants (New York USA), . (1971). Accounting for research and development costs. New York: NAA USA.
MLA
National Association of Accountants (New York USA), National Association of Accountants (New York USA), . Accounting for research and development costs. New York: NAA USA. 1971.
