Παραπομπή APA

(1967). The Engineer buyers guide: 1967 edition. London: The Engineer.

Παραπομπή Chicago Style

The Engineer Buyers Guide: 1967 Edition. London: The Engineer, 1967.

Παραπομπή MLA

The Engineer Buyers Guide: 1967 Edition. London: The Engineer, 1967.

Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.