APA-ийн эшлэл(7 дахь хэвлэлт)
Proctor, A. M. (1931). Safeguarding the school board's purchase of architects' working drawings. Teachers College, Columbia Univ.
Чикаго-гийн эшлэл (17 дахь хэвлэлт)
Proctor, Arthur Marcus. Safeguarding the School Board's Purchase of Architects' Working Drawings. New York: Teachers College, Columbia Univ, 1931.
MLA -ийн эшлэл (9 дэх хэвлэлт)
Proctor, Arthur Marcus. Safeguarding the School Board's Purchase of Architects' Working Drawings. Teachers College, Columbia Univ, 1931.
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