Example of a reference according to APA 7 Secondary Source Citation. Walden University: Online Writing Center.

In your text:

(Sparrow, as cited in Smith, 2014). 

In your reference list:

Smith, J. (2014). Docking fees and undeclared goods. The Black Pearl. 

Example of a reference according to the Guide to the Harvard System / University of Borås

In your text:

(Sparrow 1720, see Smith 2014).

In your reference list:

Smith, J. (2014). Docking fees and undeclared goods. The Black Pearl. 

Example of a reference according to the Vancouver style / Uppsala University

In your text:

Sparrow, as cited in Smith (1), argues that...

In your  reference list:

1.    Smith J. Docking fees and undeclared goods. Port Royale: The Black Pearl; 2014.