Lewellen, W. G. (1969). Cost of capital. Wadsworth.
Chicago Style aipamenaLewellen, Wilbur G. Cost of Capital. California: Wadsworth, 1969.
MLA aipamenaLewellen, Wilbur G. Cost of Capital. Wadsworth, 1969.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.