APA Citation

Schalkoff, R. J. Trik sukses menuju sukses. John Wiley & Sons.

Chicago Style Citation

Schalkoff, Robert J. Trik Sukses Menuju Sukses. John Wiley & Sons.

MLA Citation

Schalkoff, Robert J. Trik Sukses Menuju Sukses. John Wiley & Sons.

Warning: These citations may not always be 100% accurate.