Trích dẫn APA

(1991). Biotech buyer's guide 1991: Instruments, equipment, biologiscals, supplies, reply cards. Washington.

Trích dẫn kiểu Chicago

Biotech Buyer's Guide 1991: Instruments, Equipment, Biologiscals, Supplies, Reply Cards. Washington, 1991.

Trích dẫn MLA

Biotech Buyer's Guide 1991: Instruments, Equipment, Biologiscals, Supplies, Reply Cards. Washington, 1991.

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