Parkinson, H. (1932). Scientific investment: A manual for company share and debenture holders. I. Pitman.
Chicago-viite (17. p.)Parkinson, Hargreaves. Scientific Investment: A Manual for Company Share and Debenture Holders. London: I. Pitman, 1932.
MLA-viite (8. p.)Parkinson, Hargreaves. Scientific Investment: A Manual for Company Share and Debenture Holders. I. Pitman, 1932.
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