APA-ийн эшлэл(7 дахь хэвлэлт)
Lackey, E. E. (1933). A Method of selecting and evaluating materials for a course in introductory geography for teachers'-college students, for a professional subject-matter treatment.
Чикаго-гийн эшлэл (17 дахь хэвлэлт)
Lackey, Earl Emmet. A Method of Selecting and Evaluating Materials for a Course in Introductory Geography for Teachers'-college Students, for a Professional Subject-matter Treatment. Lincoln, 1933.
MLA -ийн эшлэл (9 дэх хэвлэлт)
Lackey, Earl Emmet. A Method of Selecting and Evaluating Materials for a Course in Introductory Geography for Teachers'-college Students, for a Professional Subject-matter Treatment. 1933.
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