APA (7th ed.) Zitazioa
International Correspondence Schools. Reference Library. The Transitional Spiral, Earthwork, Railroad Location, Trestles, Trackwork, Railroad Buildings and Miscelaneous Structures, Highways, Pavements, City Surveying, City Streets, Constrution Drawing. International Textbook.
Chicago Style (17th ed.) Zitazioa
International Correspondence Schools. Reference Library. The Transitional Spiral, Earthwork, Railroad Location, Trestles, Trackwork, Railroad Buildings and Miscelaneous Structures, Highways, Pavements, City Surveying, City Streets, Constrution Drawing. Scranton, EUA: International Textbook.
MLA (9th ed.) Zitazioa
International Correspondence Schools. Reference Library. The Transitional Spiral, Earthwork, Railroad Location, Trestles, Trackwork, Railroad Buildings and Miscelaneous Structures, Highways, Pavements, City Surveying, City Streets, Constrution Drawing. International Textbook.
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