Johnson, R. E. (1980). Under tutors and governors. Accelerated Christian Education.
Lua i Stíl Chicago (17ú heag.)Johnson, Ronald E. Under Tutors and Governors. USA: Accelerated Christian Education, 1980.
Lua MLA (9ú heag.)Johnson, Ronald E. Under Tutors and Governors. Accelerated Christian Education, 1980.
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