APA (7 वां संस्करण) प्रशस्ति पत्र
Sheridan, M., & Kotrla, K. (2017). They ask you answer: A revolutionary approach to inbound sales, content marketing, and today's digital consumer. Wiley.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
Sheridan, Marcus, और Krista Kotrla. They Ask You Answer: A Revolutionary Approach to Inbound Sales, Content Marketing, and Today's Digital Consumer. Hoboken, New Jersey: Wiley, 2017.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
Sheridan, Marcus, और Krista Kotrla. They Ask You Answer: A Revolutionary Approach to Inbound Sales, Content Marketing, and Today's Digital Consumer. Wiley, 2017.
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