Betts 1993, str. 5. Betts, Richard J. (Marec 1993). »Structural Innovation and Structural Design in Renaissance Architecture«. Journal of the Society of Architectural istorians. 52 (1): 5–25. doi:10.2307/990755. JSTOR990755.
Betts 1993, str. 5-7. Betts, Richard J. (Marec 1993). »Structural Innovation and Structural Design in Renaissance Architecture«. Journal of the Society of Architectural istorians. 52 (1): 5–25. doi:10.2307/990755. JSTOR990755.
Betts 1993, str. 21–23. Betts, Richard J. (Marec 1993). »Structural Innovation and Structural Design in Renaissance Architecture«. Journal of the Society of Architectural istorians. 52 (1): 5–25. doi:10.2307/990755. JSTOR990755.
Betts 1993, str. 25. Betts, Richard J. (Marec 1993). »Structural Innovation and Structural Design in Renaissance Architecture«. Journal of the Society of Architectural istorians. 52 (1): 5–25. doi:10.2307/990755. JSTOR990755.
Betts 1993, str. 5. Betts, Richard J. (Marec 1993). »Structural Innovation and Structural Design in Renaissance Architecture«. Journal of the Society of Architectural istorians. 52 (1): 5–25. doi:10.2307/990755. JSTOR990755.
Betts 1993, str. 5-7. Betts, Richard J. (Marec 1993). »Structural Innovation and Structural Design in Renaissance Architecture«. Journal of the Society of Architectural istorians. 52 (1): 5–25. doi:10.2307/990755. JSTOR990755.
Betts 1993, str. 21–23. Betts, Richard J. (Marec 1993). »Structural Innovation and Structural Design in Renaissance Architecture«. Journal of the Society of Architectural istorians. 52 (1): 5–25. doi:10.2307/990755. JSTOR990755.
Betts 1993, str. 25. Betts, Richard J. (Marec 1993). »Structural Innovation and Structural Design in Renaissance Architecture«. Journal of the Society of Architectural istorians. 52 (1): 5–25. doi:10.2307/990755. JSTOR990755.