APA-ийн эшлэл(7 дахь хэвлэлт)
Robb, J. D. (1994). Focus!: The power of people group thinking : a practical manual for planning effective strategies to reach the unreached (New expanded ed.). MARC.
Чикаго-гийн эшлэл (17 дахь хэвлэлт)
Robb, John D. Focus!: The Power of People Group Thinking : A Practical Manual for Planning Effective Strategies to Reach the Unreached. New expanded ed. Monrovia, Calif.: MARC, 1994.
MLA -ийн эшлэл (9 дэх хэвлэлт)
Robb, John D. Focus!: The Power of People Group Thinking : A Practical Manual for Planning Effective Strategies to Reach the Unreached. New expanded ed. MARC, 1994.
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