| Journal Abbreviation | Label | URL |
|---|---|---|
| MAL | 28.3 (Jul. 1947): 268-269 | http://www.jstor.org/stable/854495 |
| MT | 112.1540 (Jun. 1971) 558-559 | http://www.jstor.org/stable/957443 |
| MT | 113.1550 (Apr. 1972): 364-365 | http://www.jstor.org/stable/954676 |
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