Não informado. (1913). Extension Bulletin. Washington State University, Cooperative Extension Service.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Extension Bulletin. Pullman, Wash: Washington State University, Cooperative Extension Service, 1913.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Extension Bulletin. Washington State University, Cooperative Extension Service, 1913.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.