APA (7th ed.) Citation

Rybka, E. F. (1971). The number one success system to boost your earnings in real estate. Prentice-Hall.

Chicago Style (17th ed.) Citation

Rybka, Edward F. The Number One Success System to Boost Your Earnings in Real Estate. Englewood Cliffs, N.J.: Prentice-Hall, 1971.

MLA (9th ed.) Citation

Rybka, Edward F. The Number One Success System to Boost Your Earnings in Real Estate. Prentice-Hall, 1971.