APA (7th ed.) Zitazioa
Johns, D. L. (1982). Solving life's problems: A Christian approach. International correspondence institute.
Chicago Style (17th ed.) Zitazioa
Johns, Dorothy L. Solving Life's Problems: A Christian Approach. Belgium: International correspondence institute, 1982.
MLA (9th ed.) Zitazioa
Johns, Dorothy L. Solving Life's Problems: A Christian Approach. International correspondence institute, 1982.
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