McRitchie, W. D. (1969). A petrologic data sheet for use in the laboratory. Manitoba Mines Branch, Dept. of Mines and Natural Resources.
Lua i Stíl Chicago (17ú heag.)McRitchie, W. D. A Petrologic Data Sheet for Use in the Laboratory. Winnipeg: Manitoba Mines Branch, Dept. of Mines and Natural Resources, 1969.
Lua MLA (8ú heag.)McRitchie, W. D. A Petrologic Data Sheet for Use in the Laboratory. Manitoba Mines Branch, Dept. of Mines and Natural Resources, 1969.
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